Question

William says that 15 years from now, his age will be 3 times his age 5 years ago. If x represents William's present age, complete the following sentences. 15 years 18 years X - 15 = 3(x + 5) x + 15 = 3(x - 5) The equation representing William's claim is William's present age is Reset Next

Answer 1

His age 15 years from now will be x+15.

Three times his age 5 years ago is 3(x-5).

If both are equal, we can write:

`x+15=3(x-5)`

The equation representing William's claim is x+15 = 3(x-5).

We can calculate its present age as:

`\begin{gathered} x+15=3(x-5) \\ x+15=3x-15 \\ x-3x=-15-15 \\ -2x=-30 \\ x=(-30)/(-2) \\ x=15 \end{gathered}`

His actual age is 15 years.

Answer:

The equation representing William's claim is x+15 = 3(x-5).

His actual age is 15 years.