PSLE
Four teams of students sold lemonade for charity.
They collected $6 for a small cup of lemonade and $10 for a big cup of lemonade.

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

	Small cups	Big cups
Team T	17	2
Team U	13	9
Team V	10	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 T?
3. Team W sold as many cups of lemonade as Team T but collected $20 more. How many big cups of lemonade did Team W sell?

(a)
Amount collected by Team T = 102 + 20
= $122

Amount collected by Team U
= 13 x 6 + 9 x 10
= 78 + 90
= $168

Amount collected by Team V
= 10 x 6 + 10 x 10
= 60 + 100
= $160

Team U collected the most money.

(b)
Amount collected by Team T = $122

(c)

	Small cups	Big cups	Total cups	Total amount
Team T	17	2	19	$122
Team W	12	7	19	122 + 20 = $142

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

Difference in the total amount collected between Team W and Team T = $20

Difference in the amount collected for every one extra big cup sold by Team W
= 10 - 6
= $4

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

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

Answer(s): (a) U; (b) $122; (c) 7