PSLE At a sale, Ahmad bought 10 glasses of the same kind. His cousin bought 6 such glasses. She also bought 3 bowls at $6.10 each. Altogether, she spent $11.30 less than Ahmad. What was the total amount of money Ahmad and his cousin spent?
|
Ahmad |
His cousin |
Items bought
|
10 glasses
|
6 glasses + 3 bowls = 6 glasses + 18.30 |
Comparing the amounts paid |
$11.30 more |
|
Amount that his cousin spent on 3 bowls
= 3 x 6.10
= $18.30
Let the cost of 1 glass be 1 G.
If Ahmad spent $11.30 less, each would pay the same amount.
10 G - 11.30 = 6 G + 18.30
10 G - 6 G = 18.30 + 11.30
10 G - 6 G = 29.60
4 G = 29.60
1 G = 29.60 ÷ 4 = 7.40
Total amount that Ahmad and his cousin spent
= 10 G + 6 G + 18.30
= 16 G + 18.30
= 16 x 7.40 + 18.30
= 118.40 + 18.30
= $136.70
Answer(s): $136.70