Question

The ratio of your monthly allowance to your friend’s monthly allowance is 5 : 3. If you received a monthly allowance of $36, how much did your friend receive?

Answer 1

Answer:
5/3 = 36/x
Cross multiply:
5x = 36*3
x = 36 • 3 / 5
x = 108/5
x = 21.6

So your friend received $21 and 60 cents

Hope this helps :)