PSLE
Four teams of students sold hot chocolate for charity.
They collected $5 for a small cup of hot chocolate and $7 for a big cup of hot chocolate.

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

	Small cups	Big cups
Team K	17	2
Team L	13	8
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 hot chocolate as Team N but collected $16 less. How many small cups of hot chocolate did Team N sell?

(a)
Amount collected by Team K = 85 + 14
= $99

Amount collected by Team L
= 13 x 5 + 8 x 7
= 65 + 56
= $121

Amount collected by Team M
= 8 x 5 + 11 x 7
= 40 + 77
= $117

Team K collected the least money.

(b)
Amount collected by Team M = $117

(c)

	Small cups	Big cups	Total cups	Total amount
Team L	13	8	21	$121
Team N	5	16	21	121 + 16 = $137

Since Team L and Team N sold the same number of cups but Team L collected $16 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 = $16

Difference in the amount collected for every one extra big cup sold by Team N
= 7 - 5
= $2

Number of extra big cups sold by Team N
= 16 ÷ 2
= 8

Number of small cups sold by Team N
= 13 - 8
= 5

Answer(s): (a) K; (b) $117; (c) 5