Hotmath
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Title:
Hotmath
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Hotmath
Chapter: Proportions, Ratios and Percent Section: Percent of Increase or Decrease
 

Problem: 1

Determine whether the change is an increase or decrease. Then obtain the percent of increase or decrease. Round the answer to the nearest whole percent.

old: 168 kilograms

new: 122 kilograms

 

Problem: 3

Determine whether the change is an increase or decrease. Then obtain the percent of increase or decrease. Round the answer to the nearest whole percent.

old: 345 acres

new: 380 acres

 

Problem: 5

Determine whether the change is an increase or decrease. Then obtain the percent of increase or decrease. Round the answer to the nearest whole percent.

old: $315

new: $360

 

Problem: 7

Determine whether the change is an increase or decrease. Then obtain the percent of increase or decrease. Round the answer to the nearest whole percent.

old: 78 years

new: 114 years

 

Problem: 9

A pair of jeans is marked down 30% and then reduced at the cash register another 10%. Is this a total reduction of 40%? Why or why not?

 

Problem: 11

The number of participants in an athletic competition increased from 312 to 351. Find the percent of increase.

 

Problem: 13

Describe the pattern using a percent. Find the next three numbers in the sequence. 1, 3, 9, 27, ?, ?, ?.

 

Problem: 15

Describe the pattern using a percent. Find the next number in the sequence.

200, 220, 242, 266.2, ?

 

Problem: 17

In 1990, Mary's height was 61 cm. In 2000, she grew to 130 cm. Find the percent increase in Mary's height.

 

Problem: 19

Kundhavi's Pet Shop had a 220% increase in sales of turtles in 2003 over the previous year. If they sold 50 turtles in 2002, how many did they sell in 2003?

Increase in sales = 220%

 

Problem: 21

Calculate the percent of change.

Before: 22 After: 18.

 

Problem: 23

Calculate the percent of change.

Before: $130 After: $270.

 

Problem: 25

Calculate the percent of change.

Before: $965 After: $1544.

 

Problem: 27

Find the markup for the given values of cost and percent of markup.

cost: $2.70

Percent of markup: 80%

 

Problem: 29

Find the markup for the given values of cost and percent of markup.

cost: $270.00

percent of markup: 70%

 

Problem: 31

Find the discount for the given values of price and percent of discount.

regular price: $36.60

percent of discount: 40%

 

Problem: 33

Find the selling price for the given values of cost and percent of markup. Round to the nearest cent wherever necessary.

cost: $8

percent markup: 65%

 

Problem: 35

Find the selling price for the given values of regular price and percent of discount. Round to the nearest cent wherever necessary.

regular price: $17.44

percent of discount: 18%

 

Problem: 37

The original cost of an item is $15.40. The percent of markup is 15%. Find the markup.

 

Problem: 39

The regular selling price of a jacket is $75. The shop offers a discount of 30%.

a) Find the discount.

b) Find the sale price.

 

Problem: 41

The regular selling price of an item at Shop A is $32.25. The shop offers a discount of 20%. The regular selling price of the same item at shop B is $43.35 and the discount is 40%. Which shop offers the lowest sale price? Also find out the difference in the sale prices.