PSLE At a sale, Ben bought 5 cups of the same kind. His friend bought 3 such cups. She also bought 2 glasses at $7.30 each. Altogether, she spent $4.60 less than Ben. What was the total amount of money Ben and his friend spent?
|
Ben |
His friend |
Items bought
|
5 cups
|
3 cups + 2 glasses = 3 cups + 14.60 |
Comparing the amounts paid |
$4.60 more |
|
Amount that his friend spent on 2 glasses
= 2 x 7.30
= $14.60
Let the cost of 1 cup be 1 C.
If Ben spent $4.60 less, each would pay the same amount.
5 C - 4.60 = 3 C + 14.60
5 C - 3 C = 14.60 + 4.60
5 C - 3 C = 19.20
2 C = 19.20
1 C = 19.20 ÷ 2 = 9.60
Total amount that Ben and his friend spent
= 5 C + 3 C + 14.60
= 8 C + 14.60
= 8 x 9.60 + 14.60
= 76.80 + 14.60
= $91.40
Answer(s): $91.40