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 blue and green pens sold?
- Each pink pen cost $0.30 more than each silver pen. The bookshop collected $78 from selling the silver pens. What was the price of 1 pink pen?
(a)
Difference between number of blue and green pens sold
= 70 - 46
= 24
(b)
Number of silver pens sold = 12
Price of 1 silver pen
= 78 ÷ 12
= $6.50
Price of 1 pink pen
= 6.50 + 0.30
= $6.80
Answer(s): (a) 24; (b) $6.80