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complete the table
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
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?
Kiran rides her scooter 14 km at an average speed of 16 km per hour and again travels 16 km at an average speed of 14 km per hour.
What is her average speed for the entire trip approximately?
An aeroplane covers its outward journey at 600 kmph.
It returns, over exactly the same distance, at 400 kmph.
What is the average speed of the aeroplane over the entire journey?
The speed of a car is 63 km/hr, if we don't let it stop at any point.
If the car stops at stops, the speed of the car is 54 km/hr.
What is the time in minutes that the car stops for per hour?
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