PSLE
Stores E and F sell punchers of four colours. The bar graphs show the number of punchers sold by each shop in January. The bar for the number blue punchers sold by Store E has not been drawn.

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

(a)
Number of orange punchers sold in Store E = 160
Number of purple punchers sold in Store E = 120
Number of pink punchers sold in Store E = 40

Since blue punchers sold in Store E is half of the punchers sold by Store E, the total of orange punchers, purple punchers and pink punchers is equal to blue punchers.

Number of blue punchers sold in Store E
= 160 + 120 + 40
= 320

(b)
Number of orange punchers sold in Store E = 160 (More)
Number of orange punchers sold in Store F = 60

Number of purple punchers sold in Store E = 120 (Equal)
Number of purple punchers sold in Store F = 120

Number of pink punchers sold in Store E = 40 (Less) 
Number of pink punchers sold in Store F = 200

Number of blue punchers sold in Store E = 320 (More) 
Number of blue punchers sold in Store F = 200 

Colour(s) of punchers that Store E sold less than Store F = Pink (P)

(c)
Percentage increase in the number of orange punchers sold by Store F from January to February
= ¹⁵₆₀ x 100%
= ¹₄ x 100%
= 25%

Answer(s): (a) 320; (b) P; (c) 25%