PSLE
Four teams of students sold soda for charity.
They collected $3 for a small cup of soda and $6 for a big cup of soda.

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

	Small cups	Big cups
Team Q	15	3
Team R	14	9
Team S	7	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 Q?
3. Team T sold as many cups of soda as Team Q but collected $6 more. How many big cups of soda did Team T sell?

(a)
Amount collected by Team Q = 45 + 18
= $63

Amount collected by Team R
= 14 x 3 + 9 x 6
= 42 + 54
= $96

Amount collected by Team S
= 7 x 3 + 10 x 6
= 21 + 60
= $81

Team R collected the most money.

(b)
Amount collected by Team Q = $63

(c)

	Small cups	Big cups	Total cups	Total amount
Team Q	15	3	18	$63
Team T	13	5	18	63 + 6 = $69

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

Difference in the total amount collected between Team T and Team Q = $6

Difference in the amount collected for every one extra big cup sold by Team T
= 6 - 3
= $3

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

Number of big cups sold by Team T
= 3 + 2
= 5

Answer(s): (a) R; (b) $63; (c) 5