PSLE At a sale, Eric bought 8 glasses of the same kind. His friend bought 5 such glasses. She also bought 3 bowls at $1.70 each. Altogether, she spent $16.20 less than Eric. What was the total amount of money Eric and his friend spent?
|
Eric |
His friend |
Items bought
|
8 glasses
|
5 glasses + 3 bowls = 5 glasses + 5.10 |
Comparing the amounts paid |
$16.20 more |
|
Amount that his friend spent on 3 bowls
= 3 x 1.70
= $5.10
Let the cost of 1 glass be 1 G.
If Eric spent $16.20 less, each would pay the same amount.
8 G - 16.20 = 5 G + 5.10
8 G - 5 G = 5.10 + 16.20
8 G - 5 G = 21.30
3 G = 21.30
1 G = 21.30 ÷ 3 = 7.10
Total amount that Eric and his friend spent
= 8 G + 5 G + 5.10
= 13 G + 5.10
= 13 x 7.10 + 5.10
= 92.30 + 5.10
= $97.40
Answer(s): $97.40