PSLE
Four teams of students sold iced milo for charity.
They collected $5 for a small cup of iced milo and $9 for a big cup of iced milo.

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

	Small cups	Big cups
Team K	18	3
Team L	14	9
Team M	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 M?
3. Team L sold as many cups of iced milo as Team N but collected $20 less. How many small cups of iced milo did Team N sell?

(a)
Amount collected by Team K = 90 + 27
= $117

Amount collected by Team L
= 14 x 5 + 9 x 9
= 70 + 81
= $151

Amount collected by Team M
= 8 x 5 + 11 x 9
= 40 + 99
= $139

Team K collected the least money.

(b)
Amount collected by Team M = $139

(c)

	Small cups	Big cups	Total cups	Total amount
Team L	14	9	23	$151
Team N	9	14	23	151 + 20 = $171

Since Team L and Team N sold the same number of cups but Team L collected $20 less, it means that Team N sold more big cups than Team L.

Difference in the total amount collected between Team L and Team N = $20

Difference in the amount collected for every one extra big cup sold by Team N
= 9 - 5
= $4

Number of extra big cups sold by Team N
= 20 ÷ 4
= 5

Number of small cups sold by Team N
= 14 - 5
= 9

Answer(s): (a) K; (b) $139; (c) 9