The bookshop sells 4 different coloured envelopes. The line graph shows the number of envelopes sold for each colour in a week.
- What was the difference between the number of yellow and green envelopes sold?
- Each purple envelope cost $0.70 more than each blue envelope. The bookshop collected $85 from selling the blue envelopes. What was the price of 1 purple envelope?
(a)
Difference between number of yellow and green envelopes sold
= 53 - 41
= 12
(b)
Number of blue envelopes sold = 25
Price of 1 blue envelope
= 85 ÷ 25
= $3.40
Price of 1 purple envelope
= 3.40 + 0.70
= $4.10
Answer(s): (a) 12; (b) $4.10