Tom is 4 more than twice Andrews age. Sara is 8 less than 5 times Andrews age. If Tom and Sara are twins, how old is Andrew?

Question

asked Mar 12, 2019 71.6k views

1 Answer

Mike Boddin · Answer 1 · 2019-03-18T04:05:23+0000

Answer:

Andrew is 4 years old

Explanation:

t=s

t=2a+4

s=5a-8

since tom and sara are twins you can set the equations equal to eachother.

2a+4=5a-8

add 8 to each side

2a+12=5a

subtract 2a

12=3a

divide by 3

4=a