PSLE Bookstores D and E 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 D has not been drawn.
- Half of the punchers sold by Bookstore D were purple punchers. How many purple punchers did Bookstore D sell?
- Which colour(s) of punchers did Bookstore D sell less than Bookstore E? Give your answer(s) in letter(s) in alphabetical order. (Eg Blue, Red = B, R)
- In July, Bookstore E sold 10 less blue punchers than the number of blue punchers sold in June. What was the percentage increase in the number of blue punchers sold by Bookstore E from June to July?
(a)
Number of pink punchers sold in Bookstore D = 25
Number of blue punchers sold in Bookstore D = 175
Number of green punchers sold in Bookstore D = 125
Since purple punchers sold in Bookstore D is half of the punchers sold by Bookstore D, the total of blue punchers, green punchers and pink punchers is equal to purple punchers.
Number of purple punchers sold in Bookstore D
= 175 + 125 + 25
= 325
(b)
Number of pink punchers sold in Bookstore D = 25 (Less)
Number of pink punchers sold in Bookstore E = 200
Number of blue punchers sold in Bookstore D = 175 (More)
Number of blue punchers sold in Bookstore E = 25
Number of green punchers sold in Bookstore D = 125 (Equal)
Number of green punchers sold in Bookstore E = 125
Number of purple punchers sold in Bookstore D = 325 (More)
Number of purple punchers sold in Bookstore E = 100
Colour(s) of punchers that Bookstore D sold less than Bookstore E = Pink (P)
(c)
Percentage decrease in the number of blue punchers sold by Bookstore E from June to July
=
1025 x 100%
=
25 x 100%
= 40%
Answer(s): (a) 325; (b) P; (c) 40%