Question

Your cousin gave you $9.66 with which to buy a present. This covered 7/10 of the cost. How much did the present cost?

Answer 1

$13.8

Explanation:

Based off the information given in the question, we know that 9.66 is equal to 7/10s of the cost. Thus, in mathematical notation:

`9.66 = C(7)/(10)`

Where C represents the total cost of the preset. Thus, to find the total cost, we simply solve this single variable equation, by multiplying both sides by the 10/7.

Thus, we get C = $13.8