PSLE
Four teams of students sold hot chocolate for charity.
They collected $6 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 C	16	4
Team D	14	9
Team E	8	11

1. Which of the three teams collected the least money? Give your answer in letter. (Eg A)
2. What was the amount of money collected by Team E?
3. Team D sold as many cups of hot chocolate as Team F but collected $6 less. How many small cups of hot chocolate did Team F sell?

(a)
Amount collected by Team C = 96 + 32
= $128

Amount collected by Team D
= 14 x 6 + 9 x 8
= 84 + 72
= $156

Amount collected by Team E
= 8 x 6 + 11 x 8
= 48 + 88
= $136

Team C collected the least money.

(b)
Amount collected by Team E = $136

(c)

	Small cups	Big cups	Total cups	Total amount
Team D	14	9	23	$156
Team F	11	12	23	156 + 6 = $162

Since Team D and Team F sold the same number of cups but Team D collected $6 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 = $6

Difference in the amount collected for every one extra big cup sold by Team F
= 8 - 6
= $2

Number of extra big cups sold by Team F
= 6 ÷ 2
= 3

Number of small cups sold by Team F
= 14 - 3
= 11

Answer(s): (a) C; (b) $136; (c) 11