Question

Renee, Susan, and Martha will share the cost to rent a vacation house for a week. • Renee will pay 40% of the cost. • Susan will pay 0.35 of the cost. • Martha will pay the remainder of the cost. Martha thinks that she will pay 13 of the cost. Is Martha correct?

Answer 1

Martha is wrong.

Explanation:

Let the cost of the house is C.

Payment by Ranee = 40% of the cost

=40% of C

=
`(40)/(100)* C`

=0.40 C

Payment by Susan = 0.35 of the cost

=0.35 C

Combined payment by Ranee and Susan = 0.40C + 0.35C=0.75C

The remaining payment will be done by Martha.

So, the remaining payment = C- 0.75C=0.25 C

Hence, Martha will have to pay 0.25 of the cost or 25% of the cost.

So, Martha is wrong.