Question

QUICK HELP!!!!

Justin's gas tank is 1/6 full. After he buys 7 gallons of gas, it is 1/2 full. How many gallons can Justin's tank hold?

Answer 1

21

Explanation:

Since the tank is already 1/6 full, it only needs another 2/6 to get to half.

2/6=1/3

so multiply 7 by 3 to get 21

Answer 2

Rewrite the fractions so they have a common denominator:

1/2 = 3/6

The tank was at 1/6 so:

3/6 - 1/6 = 2/6 simplifies to 1/3 of gas was added by the 7 gallons

There are three 1/3's to a whole ( full tank).

7 x 3 = 21

The gas tank can hold 21 gallons.