Amir’s coin collection consisted of 150 coins in November. By the following June, his collection had grown to 174 coins. By how much did his collection increase between November and June?

A.
9%

B.
14%

C.
16%

D.
24%

Question

Amir’s coin collection consisted of 150 coins in November. By the following June, his collection had grown to 174 coins. By how much did his collection increase between November and June?
 
 A.
9%
 
 B.
14%
 
 C.
16%
 
 D.
24%

anonymous · Answer

If you increase by 100% you double the amount. Using that logic, to get the percent increase. Find the difference between the two numbers and divide by the original amount. So in this find the difference between 174 and 150 and divide that difference by 150, the original amount of coins you have.