a ship traveled halfway to its destination at 18 knots and then increased its speed to 22 knots for the rest of the voyage. if the second half of the trip was completed in 2 1/2 hours less, how far did it travel at 18 knots? how far was the voyage?

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers