The line graph shows the number of coats sold by a shop from December to May in 2015.
- What was the average number of coats sold per month from December to May in 2015?
- The total number of coats sold for the same period from December to May in 2014 was 624. Find the percentage decrease in the total number of coats sold for the same period from 2014 to 2015
(a)
Total coats sold from December to May in 2015
= 96 + 72 + 95 + 51 + 86 + 68
= 468
Average coats sold from December to May in 2015
= 468 ÷ 6
= 78
(b)
Decrease in the number of coats sold
= 624 - 468
= 156
Percentage decrease in the total number of coats sold from 2014 to 2015
=
156624 x 100%
=
14x 100%
= 25%
Answer(s): (a) 78; (b) 25%