The line graph shows the number of sweaters sold by a shop from February to July in 2010.
- What was the average number of sweaters sold per month from February to July in 2010?
- The total number of sweaters sold for the same period from February to July in 2009 was 900. Find the percentage decrease in the total number of sweaters sold for the same period from 2009 to 2010
(a)
Total sweaters sold from February to July in 2010
= 52 + 97 + 55 + 60 + 84 + 48
= 396
Average sweaters sold from February to July in 2010
= 396 ÷ 6
= 66
(b)
Decrease in the number of sweaters sold
= 900 - 396
= 504
Percentage decrease in the total number of sweaters sold from 2009 to 2010
=
504900 x 100%
=
1425x 100%
= 56%
Answer(s): (a) 66; (b) 56%