PSLE
Four teams of students sold coke for charity.
They collected $4 for a small cup of coke and $6 for a big cup of coke.

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

	Small cups	Big cups
Team J	17	4
Team K	12	9
Team L	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 L?
3. Team K sold as many cups of coke as Team M but collected $6 less. How many small cups of coke did Team M sell?

(a)
Amount collected by Team J = 68 + 24
= $92

Amount collected by Team K
= 12 x 4 + 9 x 6
= 48 + 54
= $102

Amount collected by Team L
= 8 x 4 + 11 x 6
= 32 + 66
= $98

Team J collected the least money.

(b)
Amount collected by Team L = $98

(c)

	Small cups	Big cups	Total cups	Total amount
Team K	12	9	21	$102
Team M	9	12	21	102 + 6 = $108

Since Team K and Team M sold the same number of cups but Team K collected $6 less, it means that Team M sold more big cups than Team K.

Difference in the total amount collected between Team K and Team M = $6

Difference in the amount collected for every one extra big cup sold by Team M
= 6 - 4
= $2

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

Number of small cups sold by Team M
= 12 - 3
= 9

Answer(s): (a) J; (b) $98; (c) 9