The line graph shows the number of dresses sold by a shop from December to May in 2010.
- What was the average number of dresses sold per month from December to May in 2010?
- The total number of dresses sold for the same period from December to May in 2009 was 612. Find the percentage decrease in the total number of dresses sold for the same period from 2009 to 2010
(a)
Total dresses sold from December to May in 2010
= 25 + 42 + 65 + 38 + 90 + 46
= 306
Average dresses sold from December to May in 2010
= 306 ÷ 6
= 51
(b)
Decrease in the number of dresses sold
= 612 - 306
= 306
Percentage decrease in the total number of dresses sold from 2009 to 2010
=
306612 x 100%
=
12x 100%
= 50%
Answer(s): (a) 51; (b) 50%