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 silver and grey markers sold?
- Each blue marker cost $0.50 more than each gold marker. The bookshop collected $51 from selling the gold markers. What was the price of 1 blue marker?
(a)
Difference between number of silver and grey markers sold
= 75 - 44
= 31
(b)
Number of gold markers sold = 10
Price of 1 gold marker
= 51 ÷ 10
= $5.10
Price of 1 blue marker
= 5.10 + 0.50
= $5.60
Answer(s): (a) 31; (b) $5.60