The line graph shows the number of windbreakers sold by a shop from September to February in 2017.
- What was the average number of windbreakers sold per month from September to February in 2017?
- The total number of windbreakers sold for the same period from September to February in 2016 was 960. Find the percentage decrease in the total number of windbreakers sold for the same period from 2016 to 2017
(a)
Total windbreakers sold from September to February in 2017
= 43 + 76 + 25 + 53 + 22 + 45
= 264
Average windbreakers sold from September to February in 2017
= 264 ÷ 6
= 44
(b)
Decrease in the number of windbreakers sold
= 960 - 264
= 696
Percentage decrease in the total number of windbreakers sold from 2016 to 2017
=
696960 x 100%
=
2940x 100%
= 72.5%
Answer(s): (a) 44; (b) 72.5%