SAT Prep Proportion + Percent

Question 1

Volumerectangular prism = lwh. The height increases by 50%. The width increases by 20%. The volume increases by ?%

Accepted Answer

80%

Question 2

The legnth and width of a rectangular fence is increased by 10%. The area has increased by how much percent?

Accepted Answer

21%

Question 3

There are 62 arrows at an archery range in June. By August, there are 13 arrows. Calculate the percent change

Accepted Answer

79%

Question 4

What is 170% of 250%?

Accepted Answer

425%

Question 5

A population of cats in Paramus increase by 45%, then decrease by 30%. If the initial population is 200, how many cats?

Accepted Answer

203

Question 6

An investment of $2100 is made in a bank that gives 8% interest compounded weekly. How much will you have in 6 years?

Accepted Answer

$3392.50

Questions 6