There are 40 passengers in a bus, some with Rs 2.50 tickets and the remaining with Rs 3 tickets. If the total collection from these passengers is Rs 112.50, find the number of Rs 2.50 tickets.

Explanation

Let there are `x` passengers with `Rs 2.50` tickets.

Then, there are `40-x` passengers with `Rs 3` tickets.

Therefore,

`=>2.5x+3(40-x) = 112.50`

`=>2.5x+120-3x = 112.50`

`=>0.5x = 7.5`

`=> x = 15`

So, there are `15` passengers with Rs 2.50 tickets.