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

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

	Small cups	Big cups
Team U	16	3
Team V	11	9
Team W	9	10

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 U?
3. Team X sold as many cups of soda as Team U but collected $24 more. How many big cups of soda did Team X sell?

(a)
Amount collected by Team U = 80 + 27
= $107

Amount collected by Team V
= 11 x 5 + 9 x 9
= 55 + 81
= $136

Amount collected by Team W
= 9 x 5 + 10 x 9
= 45 + 90
= $135

Team V collected the most money.

(b)
Amount collected by Team U = $107

(c)

	Small cups	Big cups	Total cups	Total amount
Team U	16	3	19	$107
Team X	10	9	19	107 + 24 = $131

Since Team X and Team U sold the same number of cups but Team U collected $24 more, it means that Team X sold more big cups than Team U.

Difference in the total amount collected between Team X and Team U = $24

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

Number of extra big cups sold by Team X
= 24 ÷ 4
= 6

Number of big cups sold by Team X
= 3 + 6
= 9

Answer(s): (a) V; (b) $107; (c) 9