Question

John's gas tank is
1/10
full. After he buys
12
gallons of gas, it is
1/2
full. How many gallons can John's tank hold?

Answer 1

@MiaSan5653

Answer 2

Just two more please lol sorry

Answer 3

Okay. so he now has 5/10 of a tank. Subtract 1/10 from that

Answer 4

Your unknown is the tank capacity. Call it x.

How would you represent one tenth of that?

How would you represent one half of the tank cap?

Answer 5

@MiaSan5653 2

Answer 6

Okay. Do this by hand. When subtracting (5-1)/10 what do you get because that is the same as 5/10 - 1/10

Answer 7

The only bit of math you do so far is 5-1

Answer 8

4/10?

Answer 9

Yes. Now 4/10 of a tank used 12 gallons. If you divide 12 by four, that will get you the amount of gas in one tenth of a tank. Then you can multiply that number by ten to find the capacity of the entire tank

Answer 10

30?

Answer 11

@MiaSan5653

Answer 12

Yes