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?
A bookshelf is 4-3/4 feet wide. How many
3-inch-wide books will fit on the shelf?
It takes a woman 12 minutes to drive one way to work. She goes home for lunch 3 days each week. How much time does she spend driving to and from work each 5-day work week?
To find out how much Michi had to pay, we need to subtract the amount paid by her co-workers from the total amount of gas she put in her car.
The co-worker paid 1/2 of the total amount, which is (1/2) * $7.50 = $<<1/2*7.50=3.75>>3.75.
The other co-worker paid 1/3 of the total amount, which is (1/3) * $7.50 = $<<1/3*7.50=2.50>>2.50.
So together, her co-workers paid $3.75 + $2.50 = $<<3.75+2.50=6.25>>6.25.
Therefore, the amount that Michi had to pay is $7.50 - $6.25 = $<<7.50-6.25=1.25>>1.25.
To find out how many 3-inch-wide books can fit on the shelf, we need to divide the width of the shelf by the width of the books.
The shelf is 4-3/4 feet wide, which is equal to (4 * 12 + 3/4) inches = 48 + 3 = 51 inches wide.
The books are 3 inches wide each.
Therefore, the number of books that can fit on the shelf is 51 / 3 = <<51/3=17>>17 books.
If the woman spends 12 minutes driving to work and then 12 minutes driving back home for lunch, the total time spent driving to and from work each 5-day work week is (12 * 2) minutes * 3 days = <<12*2*3=72>>72 minutes.