Question

75 books represent 10% of total books at library 4.

Answer 1

750 books

Explanation:

10% .............75 books

100% .............x books

x = 100×75/10 = 7500/10 = 750 books

Answer 2

750 books are present in total.

Explanation:

if 75 books is 10%

then

(75*10) AND (10% * 10)

would be equal to

750 books that comprise of the 100% of the library 4.