Gears A and D have 60 teeth each, gear B has 40 teeth, and gear C has 20 teeth.
Suppose that gear B makes twenty complete turns every minute,
explain the relative speed of gears A and D
A and D will rotate with same speed
Speed of A/Speed of B = no. of teeth of B/ no. of teeth of A
Speed of A/ 20 = 40/60
Speed of A and D=40/3
Answer Is 40/3
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What is the ratio of the values of time taken to cover the distance and speed of the train?
A car start with a velocity 20 km/hr and after every hour its speed increases by 10 km/hr.
After 8 hour it starts decreasing the speed 10 km/hr after every hour and finally it stops in the destination.
What is the total length of the journey?
A car covers distance 440 km in 8 hours.
A motorbike covers the same distance in 5 hours.
What is the respective ratio between the speed of the car and the motorbike?