Find 64% of 50 books. a) 33 b) 78 c) 128 d) 320

Answer is 32 books

So i am not sure if the answer listed there are correct

But this is the way you solve it

x=number of books

change 64% percent to a decimal, 0.64

Put everyhting into equation

0.64*50=x, then solve

x=32

64% of 50 books is 32 books