3 pupils shared the cost of a present equally. When calculating the amount each pupil had to pay, a mistake was made. The cost of the present was divided by 4 instead of 3. Each pupil ended up paying $2.40 less than the correct amount. What should be the correct amount for each share?
| |
3 pupils |
4 pupils |
| Number |
3 |
4 |
| Value |
1 u + 2.40 |
1 u |
| Total value |
3 u + 7.20 |
4 u |
Total cost of the present if it was paid by 3 pupils
= 3(1 u + 2.40)
= 3 u + 7.20
Total cost of the present if it was paid by 4 pupils = 4 u
4 u = 3 u + 7.20
4 u - 3 u = 7.20
1 u = 7.20
Correct amount for each share
= 1 u + 2.40
= 7.20 + 2.40
= $9.60
Answer(s): $9.60
