PSLE Four teams of students sold hot chocolate for charity.
They collected $5 for a small cup of hot chocolate and $8 for a big cup of hot chocolate.
The table shows the number of cups sold by three of the teams.
|
Small cups |
Big cups |
Team J |
17 |
5 |
Team K |
13 |
9 |
Team L |
9 |
11 |
- Which of the three teams collected the least money? Give your answer in letter. (Eg A)
- What was the amount of money collected by Team L?
- Team K sold as many cups of hot chocolate as Team M but collected $21 less. How many small cups of hot chocolate did Team M sell?
(a)
Amount collected by Team J
= 17 x 5 + 5 x 8
= 85 + 40
= $125
Amount collected by Team K
= 13 x 5 + 9 x 8
= 65 + 72
= $137
Amount collected by Team L
= 9 x 5 + 11 x 8
= 45 + 88
= $133
Team J collected the least money.
(b)
Amount collected by Team L = $133
(c)
|
Small cups |
Big cups |
Total cups |
Total amount |
Team K |
13 |
9 |
22 |
$137 |
Team M |
6 |
16 |
22 |
137 + 21 = $158 |
Since Team K and Team M sold the same number of cups but Team K collected $21 less, it means that Team M sold more big cups than Team K.
Difference in the total amount collected between Team K and Team M = $21
Difference in the amount collected for every one extra big cup sold by Team M
= 8 - 5
= $3
Number of extra big cups sold by Team M
= 21 ÷ 3
= 7
Number of small cups sold by Team M
= 13 - 7
= 6
Answer(s): (a) J; (b) $133; (c) 6