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 purple and red envelopes sold?
- Each green envelope cost $0.70 more than each gold envelope. The bookshop collected $54 from selling the gold envelopes. What was the price of 1 green envelope?
(a)
Difference between number of purple and red envelopes sold
= 43 - 12
= 31
(b)
Number of gold envelopes sold = 15
Price of 1 gold envelope
= 54 ÷ 15
= $3.60
Price of 1 green envelope
= 3.60 + 0.70
= $4.30
Answer(s): (a) 31; (b) $4.30