The bookshop sells 4 different coloured pencils. The line graph shows the number of pencils sold for each colour in a week.
- What was the difference between the number of white and grey pencils sold?
- Each red pencil cost $0.60 more than each purple pencil. The bookshop collected $60 from selling the purple pencils. What was the price of 1 red pencil?
(a)
Difference between number of white and grey pencils sold
= 84 - 56
= 28
(b)
Number of purple pencils sold = 40
Price of 1 purple pencil
= 60 ÷ 40
= $1.50
Price of 1 red pencil
= 1.50 + 0.60
= $2.10
Answer(s): (a) 28; (b) $2.10