Question

Jamie has saved $ 38 of her allowance money to buy books . If she buys 5 books at d dollars per book , she will have 38 - 5d of her allowance left . How much does she have left if the books cost $ 2.50 each ?

Answer 1

$25.50

Explanation:

We know Jamie bought 5 books, each worth $2.50, d. We need to know the cost of all five, so we’ll go ahead and multiply 5 times $2.50 to get $12.50.

Since we know how much the books cost, all we have to do now is subtract the amount she spent from her allowance. $38.00 - $12.50 is 25.50, the amount of money Jamie has left.

Answer 2

Jamie has $12.50 of her allowance left if the books cost $2.50 each.

Explanation:

To calculate this, first calculate the total cost of the books:

5 books x $2.50/book = $12.50.

Then subtract the cost of the books from the amount Jamie has saved:

$38 - $12.50 = $25.50.

Finally, subtract the cost of the books from the amount Jamie has saved to get the amount she has left:

$25.50 - $12.50 = $12.50.