Michi put $7.50 worth of gas in her car. Two co-workers who were riding to work with her offered to share the cost of the gas. One paid 1/2 of the total amount and the other paid 1/3 of the total amount. How much of the total amount was left for Michi to pay?

Question

$1.25
$2.25
$5.25
$6.25
none

Answer 1

Let's break down the total cost of the gas, which is $7.50.

One co-worker paid \( \frac{1}{2} \) of the total amount: \[ \frac{1}{2} \times 7.50 = 3.75 \]

The other co-worker paid \( \frac{1}{3} \) of the total amount: \[ \frac{1}{3} \times 7.50 = 2.50 \]

Now, we can add the contributions of the two co-workers: \[ 3.75 + 2.50 = 6.25 \]

To find out how much of the total amount Michi has to pay, we subtract the total paid by her co-workers from the total gas cost: \[ 7.50 - 6.25 = 1.25 \]

Therefore, the amount left for Michi to pay is \( \boxed{1.25} \).