PSLE At a sale, Eric bought 8 bowls of the same kind. His cousin bought 5 such bowls. She also bought 3 cups at $3.90 each. Altogether, she spent $8.40 less than Eric. What was the total amount of money Eric and his cousin spent?
|
Eric |
His cousin |
Items bought
|
8 bowls
|
5 bowls + 3 cups = 5 bowls + 11.70 |
Comparing the amounts paid |
$8.40 more |
|
Amount that his cousin spent on 3 cups
= 3 x 3.90
= $11.70
Let the cost of 1 bowl be 1 B.
If Eric spent $8.40 less, each would pay the same amount.
8 B - 8.40 = 5 B + 11.70
8 B - 5 B = 11.70 + 8.40
8 B - 5 B = 20.10
3 B = 20.10
1 B = 20.10 ÷ 3 = 6.70
Total amount that Eric and his cousin spent
= 8 B + 5 B + 11.70
= 13 B + 11.70
= 13 x 6.70 + 11.70
= 87.10 + 11.70
= $98.80
Answer(s): $98.80