Question

• Prasad found a wad of cash, 1-dollar bills and 5-dbllar bills. The total number of bills was 60.

The total amount of money was $150. How many of each type of bill did Prasad find?

Answer 1

Explanation:

Let
`x` be number of $1 bills.

Let
`y` be the number of $5 bills.

So we get:

`x+y=60`
`(1)`

`x+5y=150`
`(2)`

Then we solve these simultaneously:

`(2)-(1)` gives

`4y=90` ⇒
`y=22.5`

Substitute
`y=22.5` into
`(1)` gives:

`x+22.5=60` ⇒
`x=37.5`

So there appears to be no solution to this question as you cannot have half bills.