# ACT Math : How to find the sale price

## Example Questions

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### Example Question #31 : Sale Prices

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

A pack of batteries is on sale for  of the normal price. If ten packs cost , what is the non-discounted price of one pack of batteries?

Round to the nearest .

Explanation:

We can apply our formula, if we remember to first divide by :

--->

Thus, our rounded answer is .

### Example Question #32 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

A video game is normally priced at . If the game is subsequently purchased for , what was the discount, as a percent, on the purchase?

There is not enough information to answer the question.

Explanation:

To find the discount as a percent, simply divide the sale price by the original price, and multiply by  (to convert from a decimal to a percent).

-->

Thus, the game was purchased on a  discount.

### Example Question #33 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

A steak dinner at Steaks 'R Us is normally priced at . The restaurant gives a discount to a preferred customer, and they eat for . What was the discount, as a percent, on the dinner?

Explanation:

To find the discount as a percent, simply divide the sale price by the original price, and multiply by  (to convert from a decimal to a percent).

-->

Thus, the game was purchased on approximately  discount.

### Example Question #31 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

Company A sells bicycles normally costing  for . Company B sells bicycles normally costing  for . Which company offers a greater discount, as a percentage?

Company B

There is not enough information to answer the question.

Company A

Both companies offer the same percentage discount.

Company B

Explanation:

Here we are looking to solve our equation for . We need only to solve each equation for , with the bigger  representing the bigger percent discount.

--->

For Company A:

For Company B:

Thus, Company B offers the greater discount by percentage.

### Example Question #35 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

Maria makes cakes for big events, like weddings and graduations. She sells a cake that costs her  to make for a total of . The customer later purchases another cake identical to the first one, and Maria gives a discount, selling the second cake for only . What percent of Maria's profits did she sacrifice for the customer?

Explanation:

It is a mistake to assume that we must calculate the profit percentage of each sale to find the answer to this problem. All we need to do to solve is to compare the ratio of the new sale's absolute amount to the old sale's absolute amount, and we will have our percentage.

So, Maria gave up approximately  of her profits on the second cake.

### Example Question #36 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

Chen can choose from one of three deals for a new weight set: He can get  off of a  set, or  off of a  set, or  off of a  set. Assuming the quality of sets is identical, which discount results in the least expensive set for Chen?

The  set at  off.

The  set at  off.

There is not enough information to answer the question.

The  set at  off.

All of these offer the same final price.

The  set at  off.

Explanation:

To find the best final sale amount, we simply apply our equation three times:

For the first weight set:

For the second weight set:

For the third weight set:

So, the least expensive weight set is the  set at  off.

### Example Question #37 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

John buys a car at a  discount, and pays . Susan buys a car at a  discount, and pays . Romeo buys a car at a  discount, and pays . Before any discount was applied, who bought the most expensive car?

Romeo.

John.

Susan.

There is not enough information to answer the question.

All three cars were the same price before the discount.

All three cars were the same price before the discount.

Explanation:

To find the original price of the car, substitute our known values into the equation for each car, then solve for .

For the first car:

--->

For the second car:

--->

For the third car:

--->

So, all three cars initially cost the same (although Susan appears to be the superior negotiator!)

### Example Question #38 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

A certain product sells for  dollars at full price, but can be purchased at  off for each additional unit past the first that is purchased, to a maximum of  off each unit if  or more are purchased at one time.

Which equation represents the price, with discount, of a purchase of  units of this product?

Explanation:

Purchasing  units entitles us to the maximum  discount on each unit, so we simply calculate the cost of  units at  off:

### Example Question #39 : How To Find The Sale Price

To find the sale price for a single item or group of like items, one can use the equation , where  is the discounted price,  is the original price, and  is the percent to be discounted in decimal form.

Save-All Foods has a coupon matching program where customers can bring in any competitor's coupon and have the cash or percent off amount on the coupon face matched at their location. A customer brings in a coupon for  off a gallon of milk from another grocery store. If the milk at Save-All Foods normally costs /gallon, and the milk at the competitor costs /gallon, how much money does the customer save on the final price of milk by using the coupon matching program?

Round to the nearest cent.

/gallon

/gallon

/gallon

/gallon

/gallon

/gallon

Explanation:

To find the answer here, simply calculate our equation for discounts using each store's price, then find the difference in final cost.

For the competitor:

--->

For Save-All Foods:

--->

So, the customer saves /gallon by using the coupon at Save-All Foods.

### Example Question #31 : How To Find The Sale Price

Mark wants to buy a new television for football season.  The TV is currently on a  sale. Mark also has a store loyalty card which gives him an extra  off. The final price of the TV is what percentage off of the original cost?