The line graph shows the number of vests sold by a shop from April to September in 2010.
- What was the average number of vests sold per month from April to September in 2010?
- The total number of vests sold for the same period from April to September in 2009 was 675. Find the percentage decrease in the total number of vests sold for the same period from 2009 to 2010
(a)
Total vests sold from April to September in 2010
= 44 + 39 + 88 + 39 + 94 + 20
= 324
Average vests sold from April to September in 2010
= 324 ÷ 6
= 54
(b)
Decrease in the number of vests sold
= 675 - 324
= 351
Percentage decrease in the total number of vests sold from 2009 to 2010
=
351675 x 100%
=
1325x 100%
= 52%
Answer(s): (a) 54; (b) 52%