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 green and purple pens sold?
- Each brown pen cost $0.50 more than each yellow pen. The bookshop collected $78 from selling the yellow pens. What was the price of 1 brown pen?
(a)
Difference between number of green and purple pens sold
= 19 - 12
= 7
(b)
Number of yellow pens sold = 65
Price of 1 yellow pen
= 78 ÷ 65
= $1.20
Price of 1 brown pen
= 1.20 + 0.50
= $1.70
Answer(s): (a) 7; (b) $1.70