The line graph shows the number of windbreakers sold by a shop from December to May in 2012.
- What was the average number of windbreakers sold per month from December to May in 2012?
- The total number of windbreakers sold for the same period from December to May in 2011 was 625. Find the percentage decrease in the total number of windbreakers sold for the same period from 2011 to 2012
(a)
Total windbreakers sold from December to May in 2012
= 28 + 33 + 37 + 89 + 99 + 44
= 330
Average windbreakers sold from December to May in 2012
= 330 ÷ 6
= 55
(b)
Decrease in the number of windbreakers sold
= 625 - 330
= 295
Percentage decrease in the total number of windbreakers sold from 2011 to 2012
=
295625 x 100%
=
59125x 100%
= 47.2%
Answer(s): (a) 55; (b) 47.2%