PSLE At a sale, Charlie bought 10 mugs of the same kind. His sister bought 6 such mugs. She also bought 3 bowls at $6.50 each. Altogether, she spent $7.30 less than Charlie. What was the total amount of money Charlie and his sister spent?
|
Charlie |
His sister |
Items bought
|
10 mugs
|
6 mugs + 3 bowls = 6 mugs + 19.50 |
Comparing the amounts paid |
$7.30 more |
|
Amount that his sister spent on 3 bowls
= 3 x 6.50
= $19.50
Let the cost of 1 mug be 1 M.
If Charlie spent $7.30 less, each would pay the same amount.
10 M - 7.30 = 6 M + 19.50
10 M - 6 M = 19.50 + 7.30
10 M - 6 M = 26.80
4 M = 26.80
1 M = 26.80 ÷ 4 = 6.70
Total amount that Charlie and his sister spent
= 10 M + 6 M + 19.50
= 16 M + 19.50
= 16 x 6.70 + 19.50
= 107.20 + 19.50
= $126.70
Answer(s): $126.70