The line graph shows the number of dresses sold by a shop from August to January in 2010.
- What was the average number of dresses sold per month from August to January in 2010?
- The total number of dresses sold for the same period from August to January in 2009 was 864. Find the percentage decrease in the total number of dresses sold for the same period from 2009 to 2010
(a)
Total dresses sold from August to January in 2010
= 42 + 66 + 61 + 44 + 72 + 39
= 324
Average dresses sold from August to January in 2010
= 324 ÷ 6
= 54
(b)
Decrease in the number of dresses sold
= 864 - 324
= 540
Percentage decrease in the total number of dresses sold from 2009 to 2010
=
540864 x 100%
=
58x 100%
= 62.5%
Answer(s): (a) 54; (b) 62.5%