The speed at which a woman can row a boat in still water is 30 kmph. If he rows downstream, where the speed of current is 6 kmph, what time will he take to cover 100 metres? Choose one.
A) 8 B) 9 C) 10 D) 11 E) 12
Speed of the boat downstream = 30 + 6= 
<gadget id="calculator">30 + 6</gadget>
<output>36</output>
36 kmph= 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 m/s   Hence time taken to cover 100 m= 100/10= 
<gadget id="calculator">100/10</gadget>
<output>10</output>
10 seconds. Answer: 10
<result>C</result>
The speed at which a woman can row a boat in still water is 30 kmph. If he rows downstream, where the speed of current is 6 kmph, what time will he take to cover 100 metres?