The line graph shows the number of windbreakers sold by a shop from August to January in 2013.
- What was the average number of windbreakers sold per month from August to January in 2013?
- The total number of windbreakers sold for the same period from August to January in 2012 was 840. Find the percentage decrease in the total number of windbreakers sold for the same period from 2012 to 2013
(a)
Total windbreakers sold from August to January in 2013
= 66 + 51 + 67 + 93 + 21 + 80
= 378
Average windbreakers sold from August to January in 2013
= 378 ÷ 6
= 63
(b)
Decrease in the number of windbreakers sold
= 840 - 378
= 462
Percentage decrease in the total number of windbreakers sold from 2012 to 2013
=
462840 x 100%
=
1120x 100%
= 55%
Answer(s): (a) 63; (b) 55%