Question

Marks age is, t, is 3 times his age 10 years ago. Write an equation to represent the statement.

Answer 1

t = 3(t - 10) is the required equation

Answer 2

To find the equation:

Marks age 10 years ago would be: t-10

As his age is 3 times his age 10 years ago,his age is:
t=(t-10)×3
t=3(t-10)

Therefore the equation is t=3(t-10).

Hope it helps!