Answer: 16.8
Step-by-step explanation: if x= 15 and y =12 we know that y =.8 of x or 4/5 of x. Knowing this we can divide x (21) by 5 and get 4.2. We can then multiply this and get 16.8 which is 4/5 of x(21). y=16.8
5.1m questions
6.7m answers