Question

out of 90 books in a library 10 are social sci 18 hindi 27 english and remainng are sci books find the ratio of (a) number of social sci books to sci books

Answer 1

2:7 is the right one dude

Answer 2

Total books = 90
Number of Science books= 90- (10+18+27)
=90-55=35
Ratio of number of social sci books to sci books =10/35=2/7
=2:7