PSLE
Four teams of students sold ice cream for charity.
They collected $4 for a small cup of ice cream and $7 for a big cup of ice cream.

The table shows the number of cups sold by three of the teams.

	Small cups	Big cups
Team C	18	2
Team D	13	9
Team E	10	10

1. Which of the three teams collected the most money? Give your answer in letter. (Eg A)
2. What was the amount of money collected by Team C?
3. Team F sold as many cups of ice cream as Team C but collected $18 more. How many big cups of ice cream did Team F sell?

(a)
Amount collected by Team C = 72 + 14
= $86

Amount collected by Team D
= 13 x 4 + 9 x 7
= 52 + 63
= $115

Amount collected by Team E
= 10 x 4 + 10 x 7
= 40 + 70
= $110

Team D collected the most money.

(b)
Amount collected by Team C = $86

(c)

	Small cups	Big cups	Total cups	Total amount
Team C	18	2	20	$86
Team F	12	8	20	86 + 18 = $104

Since Team F and Team C sold the same number of cups but Team C collected $18 more, it means that Team F sold more big cups than Team C.

Difference in the total amount collected between Team F and Team C = $18

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
= 18 ÷ 3
= 6

Number of big cups sold by Team F
= 2 + 6
= 8

Answer(s): (a) D; (b) $86; (c) 8