Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Kevin now

Answer 1

K=3D

D=K/3

K-4 = 5(D-4) = 5D-20

K= 5D-20+4 = 5D-16

K=5D-16 = 5(K/3) -16

3K=5K-48

2K =48

K=24 years old for Keven, now.

D=8 years old for Daniel now

4 years ago they were 20 and 4, 20 is 5 times 4.

Kevin is 24 now