The bookshop sells 4 different coloured markers. The line graph shows the number of markers sold for each colour in a week.
- What was the difference between the number of gold and yellow markers sold?
- Each black marker cost $0.60 more than each silver marker. The bookshop collected $83 from selling the silver markers. What was the price of 1 black marker?
(a)
Difference between number of gold and yellow markers sold
= 82 - 76
= 6
(b)
Number of silver markers sold = 10
Price of 1 silver marker
= 83 ÷ 10
= $8.30
Price of 1 black marker
= 8.30 + 0.60
= $8.90
Answer(s): (a) 6; (b) $8.90