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 brown envelopes sold?
- Each grey envelope cost $0.80 more than each green envelope. The bookshop collected $84 from selling the green envelopes. What was the price of 1 grey envelope?
(a)
Difference between number of purple and brown envelopes sold
= 14 - 12
= 2
(b)
Number of green envelopes sold = 15
Price of 1 green envelope
= 84 ÷ 15
= $5.60
Price of 1 grey envelope
= 5.60 + 0.80
= $6.40
Answer(s): (a) 2; (b) $6.40