The line graph shows the number of dresses sold by a shop from January to June in 2011.
- What was the average number of dresses sold per month from January to June in 2011?
- The total number of dresses sold for the same period from January to June in 2010 was 900. Find the percentage decrease in the total number of dresses sold for the same period from 2010 to 2011
(a)
Total dresses sold from January to June in 2011
= 51 + 94 + 33 + 52 + 53 + 77
= 360
Average dresses sold from January to June in 2011
= 360 ÷ 6
= 60
(b)
Decrease in the number of dresses sold
= 900 - 360
= 540
Percentage decrease in the total number of dresses sold from 2010 to 2011
=
540900 x 100%
=
35x 100%
= 60%
Answer(s): (a) 60; (b) 60%