Study the following bar graph and pie-chart carefully and answer the question given below:


If the speed of boat B3 increases by `30%` and the speed of stream decrease by `15%` then what is the difference between the time taken by the boat now and that taken previously to travel 440 km? (Assume opposite direction of stream in either case).

Options

A. 70 hours
B. 68 hours
C. 60 hours
D. 55 hours

Answer

C