All ACT Math Resources
Example Question #32 : Percentage
Students at a country fair typically spend $40. The students have agreed to spend 40% less at this year's fair. Assuming all the students follow their new agreement, what is the most that could be spent by a student at this year's fair?
This is a percentage problem, so it is important to know that 40% of some value is equal to 0.4 of said value. So to find 40% of $40, we multiply 40 * 0.40, which equals 16. This 16 represents 40% of the original value of $40. So if a student was to spend 40% less than they usually spend, we would subtract $16, which is 40% of the original value, from $40, giving us an answer of $24.
Example Question #33 : Percentage
There are n pennies in a jar. Let p represent the decimal ratio of the pennies that are dated before 1983. Which of the following equations repesents the number of pennies that are dated 1983 or later?
The proportion of pennies before 1983 would be np. Therefore, the pennies dated 1983 or later would be n(1-p).
Example Question #1 : How To Find Decimal Equivalent To A Percentage
Express the following as a decimal:
To convert a percentage to a decimal, you must add a decimal two points to the left from the right hand side. Thus,
Example Question #2 : How To Find Decimal Equivalent To A Percentage
Which of the following is equivalent to ?
To find a decimal from a percentage, divide the percentage value by . In this case, convert the fraction to a decimal first:
Example Question #3 : How To Find Decimal Equivalent To A Percentage
A share in a stock is added to a share by speculators. What is the decimal equivalent of the combined shares?
To convert from a percentage to a decimal, divide the decimal by . In this case, we can add the percentages first.