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

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

	Small cups	Big cups
Team W	16	3
Team X	12	9
Team Y	6	12

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 W?
3. Team Z sold as many cups of lemonade as Team W but collected $6 more. How many big cups of lemonade did Team Z sell?

(a)
Amount collected by Team W = 80 + 21
= $101

Amount collected by Team X
= 12 x 5 + 9 x 7
= 60 + 63
= $123

Amount collected by Team Y
= 6 x 5 + 12 x 7
= 30 + 84
= $114

Team X collected the most money.

(b)
Amount collected by Team W = $101

(c)

	Small cups	Big cups	Total cups	Total amount
Team W	16	3	19	$101
Team Z	13	6	19	101 + 6 = $107

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

Difference in the total amount collected between Team Z and Team W = $6

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

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

Number of big cups sold by Team Z
= 3 + 3
= 6

Answer(s): (a) X; (b) $101; (c) 6