The line graph shows the total number of used vacuum cleaners sold by a dealer in the first six months of the year.
- In which two months were there a consecutive increase in the number of vacuum cleaners sold? Give the answer in short form. (Eg Jan, Feb)
- What fraction of the vacuum cleaners was sold in the month of the lowest sale?
- The dealer was paid a fixed amount of money for every vacuum cleaner he sold. He received $2400 more in May than in June. How much money did he receive from selling a vacuum cleaner?
(a)
There was a consecutive increase in the number of vacuum cleaners sold in February and March.
(b)
Total number of vacuum cleaners
= 8 + 16 + 30 + 2 + 28 + 16
= 100
Number of vacuum cleaners sold in April = 2
Fraction of the vacuum cleaners sold in the month of the lowest sale
=
2100 =
150 (c)
Number of more vacuum cleaners sold in May than in June
= 28 - 16
= 12
12 u = 2400
1 u = 2400 ÷ 12 = 200
Amount earned from selling a vacuum cleaner = $200
Answer(s): (a) Feb, Mar or Mar, Feb; (b)
150; (c) $200