The line graph shows the number of sweaters sold by a shop from October to March in 2012.
- What was the average number of sweaters sold per month from October to March in 2012?
- The total number of sweaters sold for the same period from October to March in 2011 was 900. Find the percentage decrease in the total number of sweaters sold for the same period from 2011 to 2012
(a)
Total sweaters sold from October to March in 2012
= 82 + 68 + 51 + 22 + 66 + 53
= 342
Average sweaters sold from October to March in 2012
= 342 ÷ 6
= 57
(b)
Decrease in the number of sweaters sold
= 900 - 342
= 558
Percentage decrease in the total number of sweaters sold from 2011 to 2012
=
558900 x 100%
=
3150x 100%
= 62%
Answer(s): (a) 57; (b) 62%