PSLE At a sale, George bought 6 wine glasses of the same kind. His friend bought 3 such wine glasses. She also bought 3 cups at $3.60 each. Altogether, she spent $11.10 less than George. What was the total amount of money George and his friend spent?
|
George |
His friend |
Items bought
|
6 wine glasses
|
3 wine glasses + 3 cups = 3 wine glasses + 10.80 |
Comparing the amounts paid |
$11.10 more |
|
Amount that his friend spent on 3 cups
= 3 x 3.60
= $10.80
Let the cost of 1 wine glass be 1 W.
If George spent $11.10 less, each would pay the same amount.
6 W - 11.10 = 3 W + 10.80
6 W - 3 W = 10.80 + 11.10
6 W - 3 W = 21.90
3 W = 21.90
1 W = 21.90 ÷ 3 = 7.30
Total amount that George and his friend spent
= 6 W + 3 W + 10.80
= 9 W + 10.80
= 9 x 7.30 + 10.80
= 65.70 + 10.80
= $76.50
Answer(s): $76.50