The line graph shows the number of vests sold by a shop from May to October in 2012.
- What was the average number of vests sold per month from May to October in 2012?
- The total number of vests sold for the same period from May to October in 2011 was 816. Find the percentage decrease in the total number of vests sold for the same period from 2011 to 2012
(a)
Total vests sold from May to October in 2012
= 43 + 37 + 42 + 76 + 71 + 37
= 306
Average vests sold from May to October in 2012
= 306 ÷ 6
= 51
(b)
Decrease in the number of vests sold
= 816 - 306
= 510
Percentage decrease in the total number of vests sold from 2011 to 2012
=
510816 x 100%
=
58x 100%
= 62.5%
Answer(s): (a) 51; (b) 62.5%