The answer is A. If they buy 16 masks and 12 noses then that is 28.
Answer:
Consider the number of children to be x.
So, 144 coins were divided amongst x children.
For x-3 children, each child would have 16 coins
So, (x-3)*16=144
Solving for x, x-3=144/16
or x-3=9
or x=9+3=12
Answer is 12
Given:
On a long hike . Heather drank 7 pints of water.
Required:
How much did she drink in quarts?
Explanation:
We need raltion between pints and quarts.

We have 7 pints of water.
So,

Answer: