The line graph shows the number of windbreakers sold by a shop from March to August in 2012.
- What was the average number of windbreakers sold per month from March to August in 2012?
- The total number of windbreakers sold for the same period from March to August in 2011 was 1000. Find the percentage decrease in the total number of windbreakers sold for the same period from 2011 to 2012
(a)
Total windbreakers sold from March to August in 2012
= 86 + 96 + 47 + 64 + 99 + 28
= 420
Average windbreakers sold from March to August in 2012
= 420 ÷ 6
= 70
(b)
Decrease in the number of windbreakers sold
= 1000 - 420
= 580
Percentage decrease in the total number of windbreakers sold from 2011 to 2012
=
5801000 x 100%
=
2950x 100%
= 58%
Answer(s): (a) 70; (b) 58%