Question

In three years' time a pet mouse will be as old as his owner was
four years ago. Their present ages total 13 years. Find the age of
each now.​

Answer 1

SOLUTION

GIVEN

• In three years' time a pet mouse will be as old as his owner was four years ago.

• Their present ages total 13 years.

TO DETERMINE

The age of each now.

EVALUATION

Let present age of ower = x years

Now it is given that in three years' time a pet mouse will be as old as his owner was four years ago.

4 years ago ager of ower = x - 4 years

So present age of pet

= x - 4 - 3 years

= x - 7 years

Now their present ages total 13 years.

By the given condition

$\sf{x + x - 7 = 13}$

$\sf{ \implies \: 2x - 7 = 13}$

$\sf{ \implies \: 2x = 20}$

$\sf{ \implies \: x = 10}$

FINAL ANSWER

Present age of ower = 10 years

Present age of prt = 3 years

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