PSLE
Four teams of students sold lemonade for charity.
They collected $4 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 E	20	2
Team F	12	9
Team G	10	10

1. Which of the three teams collected the least money? Give your answer in letter. (Eg A)
2. What was the amount of money collected by Team G?
3. Team F sold as many cups of lemonade as Team H but collected $15 less. How many small cups of lemonade did Team H sell?

(a)
Amount collected by Team E = 80 + 14
= $94

Amount collected by Team F
= 12 x 4 + 9 x 7
= 48 + 63
= $111

Amount collected by Team G
= 10 x 4 + 10 x 7
= 40 + 70
= $110

Team E collected the least money.

(b)
Amount collected by Team G = $110

(c)

	Small cups	Big cups	Total cups	Total amount
Team F	12	9	21	$111
Team H	7	14	21	111 + 15 = $126

Since Team F and Team H sold the same number of cups but Team F collected $15 less, it means that Team H sold more big cups than Team F.

Difference in the total amount collected between Team F and Team H = $15

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

Number of extra big cups sold by Team H
= 15 ÷ 3
= 5

Number of small cups sold by Team H
= 12 - 5
= 7

Answer(s): (a) E; (b) $110; (c) 7