PSLE At a sale, Lee bought 11 mugs of the same kind. His cousin bought 8 such mugs. She also bought 2 bowls at $5.10 each. Altogether, she spent $9.30 less than Lee. What was the total amount of money Lee and his cousin spent?
|
Lee |
His cousin |
Items bought
|
11 mugs
|
8 mugs + 2 bowls = 8 mugs + 10.20 |
Comparing the amounts paid |
$9.30 more |
|
Amount that his cousin spent on 2 bowls
= 2 x 5.10
= $10.20
Let the cost of 1 mug be 1 M.
If Lee spent $9.30 less, each would pay the same amount.
11 M - 9.30 = 8 M + 10.20
11 M - 8 M = 10.20 + 9.30
11 M - 8 M = 19.50
3 M = 19.50
1 M = 19.50 ÷ 3 = 6.50
Total amount that Lee and his cousin spent
= 11 M + 8 M + 10.20
= 19 M + 10.20
= 19 x 6.50 + 10.20
= 123.50 + 10.20
= $133.70
Answer(s): $133.70