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 white and blue markers sold?
- Each silver marker cost $0.80 more than each pink marker. The bookshop collected $85 from selling the pink markers. What was the price of 1 silver marker?
(a)
Difference between number of white and blue markers sold
= 51 - 21
= 30
(b)
Number of pink markers sold = 25
Price of 1 pink marker
= 85 ÷ 25
= $3.40
Price of 1 silver marker
= 3.40 + 0.80
= $4.20
Answer(s): (a) 30; (b) $4.20