In a 100m race for children: A runs at 1.66 m/s. If A gives B a start of 4m and still beats him by 12 sec: what is Bs speed

In a 100m race: A runs at 8km per hour.If A gives B a start of 5m and still beats him by 15 seconds: what is Bs speed.

In a 100 m race, A runs at 6 km/hr. If A gives B a start of 8 m and still beats him by 9 seconds, what is the speed of B?

In 100 m race ,A runs at 8 km/h. If A gives B a start of 4 m and still beats him by 15 s,then what is the speed of B (m/s) ?

In a 400 m race ,A runs at a speed of 16m/s. If A gives B a start of 16 m and still beats him by 40 s,what will be the speed of B?

In a 200 m race, A runs at a speed of 2 m/s. If A gives B a start of 10 m and still beats him by 5 s, what will be the Speed of B?

In a 100 m race, A runs at a speed of (5)/(3) m/s. If A gives a start of 4 m to B and still beats him by 12 seconds, what is the speed of B?

In a race of 500 m, President runs at 5 m/s. If president gives chairman a start of 20 m and still beats him by 20 seconds, what is the chairman's speed?

A and B take part in a 100 m race. A runs at 5 km an hour. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is (a) 4.45 km/hr (b) 4.14 km/hr (c) 4.15 km/hr (d) 4.25 km/hr

In a race of 500 m President runs at 5 m/s if president gives chairman a start of 20 m and still betas him by 20 sec,What is the chairman speeds?