Question

Yen put $50 of gas in his truck. The price per gallon was $4. Write an equation that could be used to find the number of gallons he purchased.

Answer 1

Hi there! 

Let the number of gallons in the truck be represented by x.
When we multiply the amount of gallons(represented by x) in the truck, by the price price per gallon ($4), the outcome must be $50 (since this is the total amount of money spend to fill the truck).

We get the following equation:
$4 * x = $50

In mathematical language
4x = 50

Divide by 4
x = 50 / 4 = 12.5

Therefore, there are 12.5 gallons of gas in the truck.

Answer 2

g = gallons.

50 ÷ 4 = g ; which this would then show us that if we were to divide 50 by 4, this would then give us a total of 12.5 which this would show us that would be the amount that he has putted in his truck.