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 blue and black papers sold?
- Each grey paper cost $0.40 more than each brown paper. The bookshop collected $94 from selling the brown papers. What was the price of 1 grey paper?
(a)
Difference between number of blue and black papers sold
= 43 - 16
= 27
(b)
Number of brown papers sold = 20
Price of 1 brown paper
= 94 ÷ 20
= $4.70
Price of 1 grey paper
= 4.70 + 0.40
= $5.10
Answer(s): (a) 27; (b) $5.10