The line graph shows the number of sweaters sold by a shop from November to April in 2016.
- What was the average number of sweaters sold per month from November to April in 2016?
- The total number of sweaters sold for the same period from November to April in 2015 was 855. Find the percentage decrease in the total number of sweaters sold for the same period from 2015 to 2016
(a)
Total sweaters sold from November to April in 2016
= 54 + 59 + 93 + 23 + 71 + 42
= 342
Average sweaters sold from November to April in 2016
= 342 ÷ 6
= 57
(b)
Decrease in the number of sweaters sold
= 855 - 342
= 513
Percentage decrease in the total number of sweaters sold from 2015 to 2016
=
513855 x 100%
=
35x 100%
= 60%
Answer(s): (a) 57; (b) 60%