The line graph shows the number of vests sold by a shop from November to April in 2012.
- What was the average number of vests sold per month from November to April in 2012?
- The total number of vests sold for the same period from November to April in 2011 was 624. Find the percentage decrease in the total number of vests sold for the same period from 2011 to 2012
(a)
Total vests sold from November to April in 2012
= 99 + 25 + 70 + 67 + 55 + 74
= 390
Average vests sold from November to April in 2012
= 390 ÷ 6
= 65
(b)
Decrease in the number of vests sold
= 624 - 390
= 234
Percentage decrease in the total number of vests sold from 2011 to 2012
=
234624 x 100%
=
38x 100%
= 37.5%
Answer(s): (a) 65; (b) 37.5%