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 blue and pink markers sold?
- Each black marker cost $0.60 more than each silver marker. The bookshop collected $58 from selling the silver markers. What was the price of 1 black marker?
(a)
Difference between number of blue and pink markers sold
= 87 - 78
= 9
(b)
Number of silver markers sold = 10
Price of 1 silver marker
= 58 ÷ 10
= $5.80
Price of 1 black marker
= 5.80 + 0.60
= $6.40
Answer(s): (a) 9; (b) $6.40