PSLE Four children shared the cost of a souvenir equally. When calculating the amount for each share, one of the children made a mistake by dividing the cost of the souvenir by 3 instead of 4. Each child paid $1.30 more than his share. What should be the cost of the souvenir?
|
4 children |
3 children |
Number |
4 |
3 |
Value |
1 u |
1 u + 1.30 |
Total value |
4 u |
3 u + 3.90 |
Cost of the souvenir if shared by 4 children
= 4 x 1 u
= 4 u
Cost of the souvenir if shared by 3 children
= 3 x (1 u + 1.30)
= 3 u + 3.90
The total amount that the 4 children shared is the same as the total amount that the 3 children shared.
4 u = 3 u + 3.90
4 u - 3 u = 3.90
1 u = 3.90
Cost of the souvenir
= 4 u
= 4 x 3.90
= $15.60
Answer(s): $15.60