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 gold and purple papers sold?
- Each black paper cost $0.60 more than each yellow paper. The bookshop collected $52 from selling the yellow papers. What was the price of 1 black paper?
(a)
Difference between number of gold and purple papers sold
= 39 - 37
= 2
(b)
Number of yellow papers sold = 65
Price of 1 yellow paper
= 52 ÷ 65
= $0.80
Price of 1 black paper
= 0.80 + 0.60
= $1.40
Answer(s): (a) 2; (b) $1.40