Question

The school store sells erasers. If Mrs. McBryde purchases 1000 erasers for $70.00, how much does 1 eraser cost? (Hint: Do not try to solve this with a long division problem!)

Answer 1

The cost of 1 eraser is $0.07.

Explanation:

Given:

The school store sells erasers. If Mrs. McBryde purchases 1000 erasers for $70.00,

Now, to find the cost of 1 eraser.

Let the cost of 1 eraser be
`x.`

The cost of 1000 erasers is $70.00.

So, 1000 is equivalent to $70.00.

Thus, 1 is equivalent to
`x.`

Now, to solve by using cross multiplication method:

`(1000)/(70) =(1)/(x)`

By cross multiplying we get:

`1000x=70`

Dividing both sides by 1000 we get:

`x=\$0.07.`

Therefore, the cost of 1 eraser is $0.07.