The line graph shows the number of blouses sold by a shop from August to January in 2011.
- What was the average number of blouses sold per month from August to January in 2011?
- The total number of blouses sold for the same period from August to January in 2010 was 960. Find the percentage decrease in the total number of blouses sold for the same period from 2010 to 2011
(a)
Total blouses sold from August to January in 2011
= 36 + 73 + 81 + 46 + 96 + 76
= 408
Average blouses sold from August to January in 2011
= 408 ÷ 6
= 68
(b)
Decrease in the number of blouses sold
= 960 - 408
= 552
Percentage decrease in the total number of blouses sold from 2010 to 2011
=
552960 x 100%
=
2340x 100%
= 57.5%
Answer(s): (a) 68; (b) 57.5%