The line graph shows the number of windbreakers sold by a shop from September to February in 2015.
- What was the average number of windbreakers sold per month from September to February in 2015?
- The total number of windbreakers sold for the same period from September to February in 2014 was 700. Find the percentage decrease in the total number of windbreakers sold for the same period from 2014 to 2015
(a)
Total windbreakers sold from September to February in 2015
= 56 + 98 + 56 + 81 + 45 + 42
= 378
Average windbreakers sold from September to February in 2015
= 378 ÷ 6
= 63
(b)
Decrease in the number of windbreakers sold
= 700 - 378
= 322
Percentage decrease in the total number of windbreakers sold from 2014 to 2015
=
322700 x 100%
=
2350x 100%
= 46%
Answer(s): (a) 63; (b) 46%