By travelling at 40 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 answers
A) 20 kmph
B) 17 kmph
C) 15 kmph
D) 14 kmph
E) 13 kmph
Let the time taken to reach the destination be 3x hours. Total distance   = 40 * 3= 
<gadget id="calculator">40 * 3</gadget>
<output>120</output>
120x km   He covered 2/3 * 120= 
<gadget id="calculator">2/3 * 120</gadget>
<output>80</output>
80x km in 1/3 * 3x= x hours So, the remaining 40x km, he has to cover in 2x hours. Required speed   = 40x/2x = 20 kmph.   20 kmphnswer:20 kmph40 /2= 
<gadget id="calculator">40 /2</gadget>
<output>20</output>
20 kmph.   20 kmphnswer:20 kmph
<result>A</result>
By travelling at 40 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?