PSLE At a sale, Owen bought 11 wine glasses of the same kind. His aunt bought 8 such wine glasses. She also bought 4 glasses at $7.30 each. Altogether, she spent $4.30 more than Owen. What was the total amount of money Owen and his aunt spent?
|
Owen |
His aunt |
Items bought
|
11 wine glasses
|
8 wine glasses + 4 glasses = 8 wine glasses + 29.20 |
Comparing the amounts paid |
|
$4.30 more |
Amount that his aunt spent on 4 glasses
= 4 x 7.30
= $29.20
Let the cost of 1 wine glass be 1 W.
If Owen's aunt spent $4.30 less, each would pay the same amount.
11 W + 4.30 = 8 W + 29.20 - 4.30
11 W - 8 W = 29.20 - 4.30
3 W = 24.90
1 W = 24.90 ÷ 3 = 8.30
Total amount that Owen and his aunt spent
= 11 W + 8 W + 29.20
= 19 W + 29.20
= 19 x 8.30 + 29.20
= 157.70 + 29.20
= $186.90
Answer(s): $186.90