PSLE
Four teams of students sold coke for charity.
They collected $4 for a small cup of coke and $8 for a big cup of coke.

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

	Small cups	Big cups
Team N	15	3
Team P	13	7
Team Q	6	10

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 Q?
3. Team P sold as many cups of coke as Team R but collected $8 less. How many small cups of coke did Team R sell?

(a)
Amount collected by Team N = 60 + 24
= $84

Amount collected by Team P
= 13 x 4 + 7 x 8
= 52 + 56
= $108

Amount collected by Team Q
= 6 x 4 + 10 x 8
= 24 + 80
= $104

Team N collected the least money.

(b)
Amount collected by Team Q = $104

(c)

	Small cups	Big cups	Total cups	Total amount
Team P	13	7	20	$108
Team R	11	9	20	108 + 8 = $116

Since Team P and Team R sold the same number of cups but Team P collected $8 less, it means that Team R sold more big cups than Team P.

Difference in the total amount collected between Team P and Team R = $8

Difference in the amount collected for every one extra big cup sold by Team R
= 8 - 4
= $4

Number of extra big cups sold by Team R
= 8 ÷ 4
= 2

Number of small cups sold by Team R
= 13 - 2
= 11

Answer(s): (a) N; (b) $104; (c) 11