The line graph shows the number of shirts sold by a shop from February to July in 2017.
- What was the average number of shirts sold per month from February to July in 2017?
- The total number of shirts sold for the same period from February to July in 2016 was 648. Find the percentage decrease in the total number of shirts sold for the same period from 2016 to 2017
(a)
Total shirts sold from February to July in 2017
= 63 + 99 + 86 + 73 + 91 + 74
= 486
Average shirts sold from February to July in 2017
= 486 ÷ 6
= 81
(b)
Decrease in the number of shirts sold
= 648 - 486
= 162
Percentage decrease in the total number of shirts sold from 2016 to 2017
=
162648 x 100%
=
14x 100%
= 25%
Answer(s): (a) 81; (b) 25%