The line graph shows the number of coats sold by a shop from September to February in 2011.
- What was the average number of coats sold per month from September to February in 2011?
- The total number of coats sold for the same period from September to February in 2010 was 750. Find the percentage decrease in the total number of coats sold for the same period from 2010 to 2011
(a)
Total coats sold from September to February in 2011
= 46 + 62 + 29 + 40 + 35 + 70
= 282
Average coats sold from September to February in 2011
= 282 ÷ 6
= 47
(b)
Decrease in the number of coats sold
= 750 - 282
= 468
Percentage decrease in the total number of coats sold from 2010 to 2011
=
468750 x 100%
=
78125x 100%
= 62.4%
Answer(s): (a) 47; (b) 62.4%