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 purple and black papers sold?
- Each grey paper cost $0.70 more than each yellow paper. The bookshop collected $93 from selling the yellow papers. What was the price of 1 grey paper?
(a)
Difference between number of purple and black papers sold
= 87 - 67
= 20
(b)
Number of yellow papers sold = 62
Price of 1 yellow paper
= 93 ÷ 62
= $1.50
Price of 1 grey paper
= 1.50 + 0.70
= $2.20
Answer(s): (a) 20; (b) $2.20