PSLE At a sale, Pierre bought 9 bowls of the same kind. His friend bought 5 such bowls. She also bought 5 glasses at $3.70 each. Altogether, she spent $8.30 less than Pierre. What was the total amount of money Pierre and his friend spent?
|
Pierre |
His friend |
Items bought
|
9 bowls
|
5 bowls + 5 glasses = 5 bowls + 18.50 |
Comparing the amounts paid |
$8.30 more |
|
Amount that his friend spent on 5 glasses
= 5 x 3.70
= $18.50
Let the cost of 1 bowl be 1 B.
If Pierre spent $8.30 less, each would pay the same amount.
9 B - 8.30 = 5 B + 18.50
9 B - 5 B = 18.50 + 8.30
9 B - 5 B = 26.80
4 B = 26.80
1 B = 26.80 ÷ 4 = 6.70
Total amount that Pierre and his friend spent
= 9 B + 5 B + 18.50
= 14 B + 18.50
= 14 x 6.70 + 18.50
= 93.80 + 18.50
= $112.30
Answer(s): $112.30