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 red and grey envelopes sold?
- Each blue envelope cost $0.40 more than each pink envelope. The bookshop collected $93 from selling the pink envelopes. What was the price of 1 blue envelope?
(a)
Difference between number of red and grey envelopes sold
= 76 - 25
= 51
(b)
Number of pink envelopes sold = 15
Price of 1 pink envelope
= 93 ÷ 15
= $6.20
Price of 1 blue envelope
= 6.20 + 0.40
= $6.60
Answer(s): (a) 51; (b) $6.60