The bookshop sells 4 different coloured markers. The line graph shows the number of markers sold for each colour in a week.
- What was the difference between the number of brown and red markers sold?
- Each blue marker cost $0.20 more than each purple marker. The bookshop collected $77 from selling the purple markers. What was the price of 1 blue marker?
(a)
Difference between number of brown and red markers sold
= 88 - 52
= 36
(b)
Number of purple markers sold = 22
Price of 1 purple marker
= 77 ÷ 22
= $3.50
Price of 1 blue marker
= 3.50 + 0.20
= $3.70
Answer(s): (a) 36; (b) $3.70