There are 30 boys and 18 girls in a group. One half of the boys and 1/3 of the girls are wearing sweaters. How many children are NOT wearing sweaters?

Question

yet another one that stumps me! I would appreciate the help on this on 

Answer 1

If we work with the given information we'll be able to figure it out:

 

There are 30 boys and 1/2 are wearing sweaters, which means 1/2 aren't wearing sweaters. 1/2 of 30 is 15, so 15 boys are wearing sweaters and 15 aren't.

 

There are 18 girls and 1/3 are wearing sweaters, which means 2/3 aren't wearing sweaters. 1/3 of 18 is 6 and 2/3 of 18 is 12, so 6 girls are wearing sweaters and 12 aren't.

 

15 boys and 12 girls aren't wearing sweaters