PSLE
Stationery Kiosks F and G sell punchers of four colours. The bar graphs show the number of punchers sold by each shop in September. The bar for the number orange punchers sold by Stationery Kiosk F has not been drawn.

1. Half of the punchers sold by Stationery Kiosk F were orange punchers. How many orange punchers did Stationery Kiosk F sell?
2. Which colour(s) of punchers did Stationery Kiosk F sell less than Stationery Kiosk G? Give your answer(s) in letter(s) in alphabetical order. (Eg Blue, Red = B, R)
3. In October, Stationery Kiosk G sold 15 less blue punchers than the number of blue punchers sold in September. What was the percentage increase in the number of blue punchers sold by Stationery Kiosk G from September to October?

(a)
Number of purple punchers sold in Stationery Kiosk F = 15
Number of blue punchers sold in Stationery Kiosk F = 45
Number of pink punchers sold in Stationery Kiosk F = 50

Since orange punchers sold in Stationery Kiosk F is half of the punchers sold by Stationery Kiosk F, the total of blue punchers, pink punchers and purple punchers is equal to orange punchers.

Number of orange punchers sold in Stationery Kiosk F
= 45 + 50 + 15
= 110

(b)
Number of purple punchers sold in Stationery Kiosk F = 15 (Less) 
Number of purple punchers sold in Stationery Kiosk G = 30

Number of blue punchers sold in Stationery Kiosk F = 45 (More)
Number of blue punchers sold in Stationery Kiosk G = 25

Number of pink punchers sold in Stationery Kiosk F = 50 (Equal)
Number of pink punchers sold in Stationery Kiosk G = 50

Number of orange punchers sold in Stationery Kiosk F = 110 (More) 
Number of orange punchers sold in Stationery Kiosk G = 45 

Colour(s) of punchers that Stationery Kiosk F sold less than Stationery Kiosk G = Purple (P)

(c)
Percentage decrease in the number of blue punchers sold by Stationery Kiosk G from September to October
= ¹⁵₂₅ x 100%
= ³₅ x 100%
= 60%

Answer(s): (a) 110; (b) P; (c) 60%