The line graph shows the number of coats sold by a shop from March to August in 2010.
- What was the average number of coats sold per month from March to August in 2010?
- The total number of coats sold for the same period from March to August in 2009 was 700. Find the percentage decrease in the total number of coats sold for the same period from 2009 to 2010
(a)
Total coats sold from March to August in 2010
= 28 + 54 + 43 + 52 + 26 + 91
= 294
Average coats sold from March to August in 2010
= 294 ÷ 6
= 49
(b)
Decrease in the number of coats sold
= 700 - 294
= 406
Percentage decrease in the total number of coats sold from 2009 to 2010
=
406700 x 100%
=
2950x 100%
= 58%
Answer(s): (a) 49; (b) 58%