The bookshop sells 4 different coloured pens. The line graph shows the number of pens sold for each colour in a week.
- What was the difference between the number of red and grey pens sold?
- Each gold pen cost $0.40 more than each pink pen. The bookshop collected $85 from selling the pink pens. What was the price of 1 gold pen?
(a)
Difference between number of red and grey pens sold
= 65 - 39
= 26
(b)
Number of pink pens sold = 10
Price of 1 pink pen
= 85 ÷ 10
= $8.50
Price of 1 gold pen
= 8.50 + 0.40
= $8.90
Answer(s): (a) 26; (b) $8.90