PSLE Four teams of students sold hot chocolate for charity.
They collected $4 for a small cup of hot chocolate and $7 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 C |
18 |
4 |
Team D |
14 |
7 |
Team E |
6 |
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 E?
- Team D sold as many cups of hot chocolate as Team F but collected $12 less. How many small cups of hot chocolate did Team F sell?
(a)
Amount collected by Team C
= 18 x 4 + 4 x 7
= 72 + 28
= $100
Amount collected by Team D
= 14 x 4 + 7 x 7
= 56 + 49
= $105
Amount collected by Team E
= 6 x 4 + 11 x 7
= 24 + 77
= $101
Team C collected the least money.
(b)
Amount collected by Team E = $101
(c)
|
Small cups |
Big cups |
Total cups |
Total amount |
Team D |
14 |
7 |
21 |
$105 |
Team F |
10 |
11 |
21 |
105 + 12 = $117 |
Since Team D and Team F sold the same number of cups but Team D collected $12 less, it means that Team F sold more big cups than Team D.
Difference in the total amount collected between Team D and Team F = $12
Difference in the amount collected for every one extra big cup sold by Team F
= 7 - 4
= $3
Number of extra big cups sold by Team F
= 12 ÷ 3
= 4
Number of small cups sold by Team F
= 14 - 4
= 10
Answer(s): (a) C; (b) $101; (c) 10