PSLE
Book Shops F and G sell punchers of four colours. The bar graphs show the number of punchers sold by each shop in August. The bar for the number yellow punchers sold by Book Shop F has not been drawn.

1. Half of the punchers sold by Book Shop F were yellow punchers. How many yellow punchers did Book Shop F sell?
2. Which colour(s) of punchers did Book Shop F sell less than Book Shop G? Give your answer(s) in letter(s) in alphabetical order. (Eg Blue, Red = B, R)
3. In September, Book Shop G sold 35 less pink punchers than the number of pink punchers sold in August. What was the percentage increase in the number of pink punchers sold by Book Shop G from August to September?

(a)
Number of purple punchers sold in Book Shop F = 100
Number of pink punchers sold in Book Shop F = 180
Number of green punchers sold in Book Shop F = 140

Since yellow punchers sold in Book Shop F is half of the punchers sold by Book Shop F, the total of pink punchers, green punchers and purple punchers is equal to yellow punchers.

Number of yellow punchers sold in Book Shop F
= 180 + 140 + 100
= 420

(b)
Number of purple punchers sold in Book Shop F = 100 (Less) 
Number of purple punchers sold in Book Shop G = 160

Number of pink punchers sold in Book Shop F = 180 (More)
Number of pink punchers sold in Book Shop G = 100

Number of green punchers sold in Book Shop F = 140 (Equal)
Number of green punchers sold in Book Shop G = 140

Number of yellow punchers sold in Book Shop F = 420 (More) 
Number of yellow punchers sold in Book Shop G = 100 

Colour(s) of punchers that Book Shop F sold less than Book Shop G = Purple (P)

(c)
Percentage decrease in the number of pink punchers sold by Book Shop G from August to September
= ³⁵₁₀₀ x 100%
= ⁷₂₀ x 100%
= 35%

Answer(s): (a) 420; (b) P; (c) 35%