PSLE Four teams of students sold hot chocolate for charity.
They collected $6 for a small cup of hot chocolate and $10 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 R |
15 |
3 |
Team S |
11 |
8 |
Team T |
7 |
10 |
- 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 T?
- Team S sold as many cups of hot chocolate as Team U but collected $20 less. How many small cups of hot chocolate did Team U sell?
(a)
Amount collected by Team R
= 15 x 6 + 3 x 10
= 90 + 30
= $120
Amount collected by Team S
= 11 x 6 + 8 x 10
= 66 + 80
= $146
Amount collected by Team T
= 7 x 6 + 10 x 10
= 42 + 100
= $142
Team R collected the least money.
(b)
Amount collected by Team T = $142
(c)
|
Small cups |
Big cups |
Total cups |
Total amount |
Team S |
11 |
8 |
19 |
$146 |
Team U |
6 |
13 |
19 |
146 + 20 = $166 |
Since Team S and Team U sold the same number of cups but Team S collected $20 less, it means that Team U sold more big cups than Team S.
Difference in the total amount collected between Team S and Team U = $20
Difference in the amount collected for every one extra big cup sold by Team U
= 10 - 6
= $4
Number of extra big cups sold by Team U
= 20 ÷ 4
= 5
Number of small cups sold by Team U
= 11 - 5
= 6
Answer(s): (a) R; (b) $142; (c) 6