PSLE Stores K and L sell files of four colours. The bar graphs show the number of files sold by each shop in May. The bar for the number green files sold by Store K has not been drawn.
- Half of the files sold by Store K were green files. How many green files did Store K sell?
- Which colour(s) of files did Store K sell less than Store L? Give your answer(s) in letter(s) in alphabetical order. (Eg Blue, Red = B, R)
- In June, Store L sold 5 more yellow files than the number of yellow files sold in May. What was the percentage increase in the number of yellow files sold by Store L from May to June?
(a)
Number of yellow files sold in Store K = 80
Number of blue files sold in Store K = 40
Number of pink files sold in Store K = 40
Since green files sold in Store K is half of the files sold by Store K, the total of yellow files, blue files and pink files is equal to green files.
Number of green files sold in Store K
= 80 + 40 + 40
= 160
(b)
Number of yellow files sold in Store K = 80 (More)
Number of yellow files sold in Store L = 50
Number of blue files sold in Store K = 40 (Equal)
Number of blue files sold in Store L = 40
Number of pink files sold in Store K = 40 (Less)
Number of pink files sold in Store L = 60
Number of green files sold in Store K = 160 (More)
Number of green files sold in Store L = 90
Colour(s) of files that Store K sold less than Store L = Pink (P)
(c)
Percentage increase in the number of yellow files sold by Store L from May to June
=
550 x 100%
=
110 x 100%
= 10%
Answer(s): (a) 160; (b) P; (c) 10%