A and B take part in 100 m race. A runs at 5 kmph. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is:
Choose the correct choice from the following answers:
A) 1.33 kmph	B) 4.14 kmph	C) 2.33 kmph	D) 2.88 kmph	E) 4.44 kmph
Explanation:   A's speed = \fn_jvn {\color{Black} \left ( 5\times \frac{5}{18} \right )m/sec} = \fn_jvn {\color{Black}\frac{25}{18}m/sec}   Time taken by A to cover 100 m = \fn_jvn {\color{Black}(100\times \frac{18}{15})sec} = 72sec   \fn_jvn {\color{Black} \therefore } Time taken by B to cover 92 m = (72 + 8)= 
<gadget id="calculator">(72 + 8)</gadget>
<output>80</output>
80 sec.   \fn_jvn {\color{4.14 kmphlack} \therefore } 4.14 kmph's speed=\fn_jvn {\color{4.14 kmphlack} \left ( \frac{92}{80}\times \frac{18}{5} \right )kmph} =4.14kmph   Answer: 4.14 kmph
<result>B</result>
A and B take part in 100 m race. A runs at 5 kmph. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is: