The bookshop sells 4 different coloured papers. The line graph shows the number of papers sold for each colour in a week.
- What was the difference between the number of yellow and white papers sold?
- Each blue paper cost $0.20 more than each grey paper. The bookshop collected $65 from selling the grey papers. What was the price of 1 blue paper?
(a)
Difference between number of yellow and white papers sold
= 78 - 74
= 4
(b)
Number of grey papers sold = 25
Price of 1 grey paper
= 65 ÷ 25
= $2.60
Price of 1 blue paper
= 2.60 + 0.20
= $2.80
Answer(s): (a) 4; (b) $2.80