PSLE
Four teams of students sold coke for charity.
They collected $3 for a small cup of coke and $7 for a big cup of coke.

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

	Small cups	Big cups
Team N	17	4
Team P	11	9
Team Q	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 N?
3. Team R sold as many cups of coke as Team N but collected $24 more. How many big cups of coke did Team R sell?

(a)
Amount collected by Team N = 51 + 28
= $79

Amount collected by Team P
= 11 x 3 + 9 x 7
= 33 + 63
= $96

Amount collected by Team Q
= 7 x 3 + 10 x 7
= 21 + 70
= $91

Team P collected the most money.

(b)
Amount collected by Team N = $79

(c)

	Small cups	Big cups	Total cups	Total amount
Team N	17	4	21	$79
Team R	11	10	21	79 + 24 = $103

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

Difference in the total amount collected between Team R and Team N = $24

Difference in the amount collected for every one extra big cup sold by Team R
= 7 - 3
= $4

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

Number of big cups sold by Team R
= 4 + 6
= 10

Answer(s): (a) P; (b) $79; (c) 10