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 brown and black envelopes sold?
- Each gold envelope cost $0.60 more than each grey envelope. The bookshop collected $55 from selling the grey envelopes. What was the price of 1 gold envelope?
(a)
Difference between number of brown and black envelopes sold
= 67 - 23
= 44
(b)
Number of grey envelopes sold = 22
Price of 1 grey envelope
= 55 ÷ 22
= $2.50
Price of 1 gold envelope
= 2.50 + 0.60
= $3.10
Answer(s): (a) 44; (b) $3.10