Question

7 years ago, Sam was 3 times as old
as Dane. In 4 years, Sam will be
twice as old as Dane. What is dane's
i
present age?​

Answer 1

Answer:

Dane's Present age is 18 years

Step-by-step explanation:

Let Sam's present age be S and Dane's present age be D.

(S-7) = (D-7)*3

S-7 = 3D-21

S = 3D-14              .........................................................(1)

After 4 years,

(S+4) = (D+4)*2

S+4 = 2D+8

S= 2D+4                .........................................................(2)

(1) & (2)

3D-14 = 2D+4

D=18