6 friends shared the cost of a present equally. When calculating the amount each friend had to pay, a mistake was made. The cost of the present was divided by 7 instead of 6. Each friend ended up paying $2.30 less than the correct amount. What should be the correct amount for each share?
|
6 friends |
7 friends |
Number |
6 |
7 |
Value |
1 u + 2.30 |
1 u |
Total value |
6 u + 13.80 |
7 u |
Total cost of the present if it was paid by 6 friends
= 6(1 u + 2.30)
= 6 u + 13.80
Total cost of the present if it was paid by 7 friends = 7 u
7 u = 6 u + 13.80
7 u - 6 u = 13.80
1 u = 13.80
Correct amount for each share
= 1 u + 2.30
= 13.80 + 2.30
= $16.10
Answer(s): $16.10