Jan's gas tank is nearly empty, at 1\12 full. She doesn't have enough cash to fill the tank, but she adds enough gas to reach 2\3 full. How much gas did she add, as a fraction of the tank?

7/12

7/12

In a scale drawing, a 42-foot tree is drawn 6 inches high. The flag pole

next to it is drawn 7-inches high. How tall is the actual flag pole?

Tank is already 1/12 full. Then enough gas is added to make it 2/3. Let " enough gas be X.

So 1/12 + X = 2/3
Subtract 1/12 from both sides
1/12-1/12 + X = 2/3 - 1/12
X = 7/12..... Was added to 1/12 to get 2/3

Jan's gas tank is nearly empty, at 112 full. She doesn't have

enough cash to fill the tank, but she adds enough gas to reach 23 full.

How much gas did she add, as a fraction of the tank?

1/12 + 8/12 = ?

3/8