By travelling at 80 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) 25 kmph B) 40 kmph C) 35 kmph D) 46 kmph E) 50 kmph
Let the time taken to reach the destination be 3x hours. Total distance = 80 * 3= 
<gadget id="calculator">80 * 3</gadget>
<output>240</output>
240x km   He covered 2/3 * 240= 
<gadget id="calculator">2/3 * 240</gadget>
<output>160</output>
160x km in 1/3 * 3x= x hours So, the remaining 80x km, he has to cover in 2x hours. Required speed = 80x/2x   =40 kmph.   Answer: 40 kmph80 /2= 
<gadget id="calculator">80 /2</gadget>
<output>40</output>
40 kmph.   Answer: 40 kmph
<result>B</result>
By travelling at 80 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?