PSLE
Four teams of students sold coke for charity.
They collected $7 for a small cup of coke and $9 for a big cup of coke.

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

	Small cups	Big cups
Team P	15	5
Team Q	14	8
Team R	6	13

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 P?
3. Team S sold as many cups of coke as Team P but collected $4 more. How many big cups of coke did Team S sell?

(a)
Amount collected by Team P = 105 + 45
= $150

Amount collected by Team Q
= 14 x 7 + 8 x 9
= 98 + 72
= $170

Amount collected by Team R
= 6 x 7 + 13 x 9
= 42 + 117
= $159

Team Q collected the most money.

(b)
Amount collected by Team P = $150

(c)

	Small cups	Big cups	Total cups	Total amount
Team P	15	5	20	$150
Team S	13	7	20	150 + 4 = $154

Since Team S and Team P sold the same number of cups but Team P collected $4 more, it means that Team S sold more big cups than Team P.

Difference in the total amount collected between Team S and Team P = $4

Difference in the amount collected for every one extra big cup sold by Team S
= 9 - 7
= $2

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

Number of big cups sold by Team S
= 5 + 2
= 7

Answer(s): (a) Q; (b) $150; (c) 7