Question

Your mother gave you $13.35 to buy a present. This covered 3/5 of the cost. Write and solve an algebraic equation to find the cost of the present.

Answer 1

The present cost

$22.20

Explanation:

Represent the cost of the present by the variable

c

We are told

XXX

3

5

×

c

=

$

13.32

(this is the requested equation)

Multiplying both sides by

5

3

(to get rid of the fraction on the right side)

XXX

5

3

×

3

5

×

c

=

$

13.32

$

4.44

×

5

3

XXX

→

c

=

$

22.20