PSLE At a sale, Warren bought 5 wine glasses of the same kind. His friend bought 3 such wine glasses. She also bought 5 mugs at $6.30 each. Altogether, she spent $12.10 more than Warren. What was the total amount of money Warren and his friend spent?
|
Warren |
His friend |
Items bought
|
5 wine glasses
|
3 wine glasses + 5 mugs = 3 wine glasses + 31.50 |
Comparing the amounts paid |
|
$12.10 more |
Amount that his friend spent on 5 mugs
= 5 x 6.30
= $31.50
Let the cost of 1 wine glass be 1 W.
If Warren's friend spent $12.10 less, each would pay the same amount.
5 W + 12.10 = 3 W + 31.50 - 12.10
5 W - 3 W = 31.50 - 12.10
2 W = 19.40
1 W = 19.40 ÷ 2 = 9.70
Total amount that Warren and his friend spent
= 5 W + 3 W + 31.50
= 8 W + 31.50
= 8 x 9.70 + 31.50
= 77.60 + 31.50
= $109.10
Answer(s): $109.10