PSLE
Bookstores U and V sell punchers of four colours. The bar graphs show the number of punchers sold by each shop in June. The bar for the number purple punchers sold by Bookstore U has not been drawn.

1. Half of the punchers sold by Bookstore U were purple punchers. How many purple punchers did Bookstore U sell?
2. Which colour(s) of punchers did Bookstore U sell less than Bookstore V? Give your answer(s) in letter(s) in alphabetical order. (Eg Blue, Red = B, R)
3. In July, Bookstore V sold 30 less green punchers than the number of green punchers sold in June. What was the percentage increase in the number of green punchers sold by Bookstore V from June to July?

(a)
Number of orange punchers sold in Bookstore U = 80
Number of green punchers sold in Bookstore U = 180
Number of pink punchers sold in Bookstore U = 80

Since purple punchers sold in Bookstore U is half of the punchers sold by Bookstore U, the total of green punchers, pink punchers and orange punchers is equal to purple punchers.

Number of purple punchers sold in Bookstore U
= 180 + 80 + 80
= 340

(b)
Number of orange punchers sold in Bookstore U = 80 (Less) 
Number of orange punchers sold in Bookstore V = 160

Number of green punchers sold in Bookstore U = 180 (More)
Number of green punchers sold in Bookstore V = 100

Number of pink punchers sold in Bookstore U = 80 (Equal)
Number of pink punchers sold in Bookstore V = 80

Number of purple punchers sold in Bookstore U = 340 (More) 
Number of purple punchers sold in Bookstore V = 120 

Colour(s) of punchers that Bookstore U sold less than Bookstore V = Orange (O)

(c)
Percentage decrease in the number of green punchers sold by Bookstore V from June to July
= ³⁰₁₀₀ x 100%
= ³₁₀ x 100%
= 30%

Answer(s): (a) 340; (b) O; (c) 30%