By travelling at 70 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?
Pick:
A) 25 kmph
B) 20 kmph
C) 28 kmph
D) 35 kmph
E) 32 kmph
Let the time taken to reach the destination be 3x hours. Total distance = 70 * 3= 
<gadget id="calculator">70 * 3</gadget>
<output>210</output>
210x km   He covered 2/3 * 210= 
<gadget id="calculator">2/3 * 210</gadget>
<output>140</output>
140x km in 1/3 * 3x= x hours So, the remaining 70x km, he has to cover in 2x hours. Required speed = 70x/2x   =35 kmph.   Answer: 35 kmph70 /2= 
<gadget id="calculator">70 /2</gadget>
<output>35</output>
35 kmph.   Answer: 35 kmph
<result>D</result>
By travelling at 70 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?