PSLE Four teams of students sold coke for charity.
They collected $6 for a small cup of coke and $10 for a big cup of coke.
The table shows the number of cups sold by three of the teams.
|
Small cups |
Big cups |
Team D |
15 |
3 |
Team E |
11 |
9 |
Team F |
6 |
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 F?
- Team E sold as many cups of coke as Team G but collected $28 less. How many small cups of coke did Team G sell?
(a)
Amount collected by Team D
= 15 x 6 + 3 x 10
= 90 + 30
= $120
Amount collected by Team E
= 11 x 6 + 9 x 10
= 66 + 90
= $156
Amount collected by Team F
= 6 x 6 + 10 x 10
= 36 + 100
= $136
Team D collected the least money.
(b)
Amount collected by Team F = $136
(c)
|
Small cups |
Big cups |
Total cups |
Total amount |
Team E |
11 |
9 |
20 |
$156 |
Team G |
4 |
16 |
20 |
156 + 28 = $184 |
Since Team E and Team G sold the same number of cups but Team E collected $28 less, it means that Team G sold more big cups than Team E.
Difference in the total amount collected between Team E and Team G = $28
Difference in the amount collected for every one extra big cup sold by Team G
= 10 - 6
= $4
Number of extra big cups sold by Team G
= 28 ÷ 4
= 7
Number of small cups sold by Team G
= 11 - 7
= 4
Answer(s): (a) D; (b) $136; (c) 4