A departmental store had 190 blenders for sale during a 7-day period. The line graph shows the number of blenders left unsold at the end of each day. The number of blenders left unsold at the end of Day 7 was not shown.
- On which day was the greatest number of blenders sold? Give your answer in number. (Eg 1)
- The average number of blenders sold for the last three days was 17. How many blenders were sold on Day 7?
(a)
To find the greatest increase in the number of tickets sold, look for the steepest decreasing slope.
On Day 4, the number of blenders sold was the greatest number.
(b)
Total number of blenders sold for the last three days
= 3 x 17
= 51
Total number of blenders sold on Day 5 and Day 6
= 5 + 5
= 10
Total number of blenders sold on Day 7
= 51 - 10
= 41
Answer(s): (a) 4; (b) 41