By travelling at 50 kmph, a person reaches his destination on time. He covered two-third the total distance in one-third of the total time. What speed should he maintain for the remaining distance to reach his destination on time?  Choose the correct choice from the following choices.
A) 23 kmph
B) 24 kmph
C) 25 kmph
D) 26 kmph
E) 27 kmph
Let the time taken to reach the destination be 3x hours. Total distance = 50 * 3= 
<gadget id="calculator">50 * 3</gadget>
<output>150</output>
150x km   He covered 2/3 * 150= 
<gadget id="calculator">2/3 * 150</gadget>
<output>100</output>
100x km in 1/3 * 3x= x hours So, the remaining 50x km, he has to cover in 2x hours. Required speed = 50x/2x   =25 kmph.   Answer: 25 kmph50 /2= 
<gadget id="calculator">50 /2</gadget>
<output>25</output>
25 kmph.   Answer: 25 kmph
<result>C</result>
By travelling at 50 kmph, a person reaches his destination on time. He covered two-third the total distance in one-third of the total time. What speed should he maintain for the remaining distance to reach his destination on time?