In April, Mr. Anderson's students read 20 books. In May, they read 14 books what is the percent increase or decrease in the number of books they read? A.20% decrease

B.15% decrease

C.30%increase

D.30%decrease

30% decrease

Step-by-step explanation:

14/20 = X/100

Cross Multiply  

100 x(14/20)=X

14 multiplied by 100 equals 1400; 1400 divided by 20 equals 70.

14 is 70% of 20

therefore 30 is 6% of 20

So, it decreases by 30%

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490