Neil is 4 years older than Andrea. If Neil was twice as old as Andrea four years ago, how old was Andrea? CAN SOMEONE PLEASE HELP ME NOW?!?!?!?!?! Thanks

Question

asked Apr 5, 2021 113k views

1 Answer

Barath · Answer 1 · 2021-04-10T21:23:42+0000

Answer:

Neil's age is 12 and the age of Andrea is 8.

Explanation:

Let

x ---> Neil's age

y ---> Andrea's age

we know that

Neil is 4 years older than Andrea

so

x=y+4 -----> equation A

Neil was twice as old as Andrea four years ago

so

x-4=2(y-4)

$x-4=2y-8\\x-2y=-8+4$

x-2y=-4 ----> equation B

substitute equation A in equation B

y+4-2y=-4

solve for y

$2y-y=4+4\\y=8$

Find the value of x

x=8+4=12

therefore

Neil's age is 12 and the age of Andrea is 8.