AskQ logo

STUCK ON HOMEWORK?

ASK FOR HELP FROM OUR KIASUPARENTS.COM COMMUNITY!

Question

Answer

If there are 5u girls, there are 4u girls wearing  spectacles and u girls not wearing.

There are in total  ( 345 – 5u) boys, and there are 3(345 – 5u)/5 = (207 – 3u) boys wearing spectacles.

Given

4u – (207 -3u) = 20

7u = 227

I can’t get integer answer, pls check the question again.

Note: the ratio of  number of boys and girls in the hall were not given in the question. So the ratio of 1:4 and 3:2 cannot be used in this case. The clue that linked number of boys to girls are the total number of students. So your working of trying to subtract the ratio is not correct. 

0 Replies 1 Like