The line graph shows the number of tourist attraction tickets sold from Tuesday to Saturday.

1. What is the difference between the highest and the lowest number of tourist attraction tickets sold from Tuesday to Saturday?
2. Between which 2 days did the number of tickets sold increase the greatest? Give your answer in the following format.  (Eg Mon to Tue)

(a)
Highest number of tourist attraction tickets sold = 4000 (Tuesday)
Lowest number of tourist attraction tickets sold = 1200 (Thursday)

Difference between the highest and the lowest number of tourist attraction tickets sold from from Tuesday to Saturday
= 4000 - 1200
= 2800

(b)
To find the greatest increase in the number of tickets sold, look for the steepest increasing slope.

Between Thursday to Friday, the number of tickets sold increased the greatest.

To show: 

Decrease in the number of tourist attraction tickets sold from Tuesday to Wednesday
= 4000 - 3900
= 100

Decrease in the number of tourist attraction tickets sold from Wednesday to Thursday
= 3900 - 1200
= 2700

Increase in the number of tourist attraction tickets sold from Thursday to Friday
= 2400 - 1200
= 1200

Increase in the number of tourist attraction tickets sold from Friday to Saturday
= 3400 - 2400
= 1000

Answer(s): (a) 2800; (b) Thu to Fri