In a 100 m race, A runs at a speed of (5...

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?

A

`(5)/(4) m//s`

B

`(7)/(5) m//s`

C

`(4)/(3) m//s`

D

`(6)/(5) m//s`

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