A cycled from P to Q at 10 kmph and returned at the rate of 9 kmph. B cycled both ways at 12 kmph. In the whole journey B took 10 minutes less than A. Find the distance between P and Q.	Choose the correct choice from the following answers.
A) 1.75km  B) 2.75km  C) 3.75km  D) 4.75km  E) 5.75km
A -time = d/10 + d/9 = 19d/90 hours   B -time = 2d/12 = d/6 hours   10 min = 1/6 hours   Thus 19d/90 - d/6 = 1/6   (19d-15d)/90 = 1/6   4d/90 = 1/6   thus d= 15/4= 
<gadget id="calculator">15/4</gadget>
<output>15/4 = around 3.75</output>
3.75km   ANSWER:3.75km
<result>C</result>
A cycled from P to Q at 10 kmph and returned at the rate of 9 kmph. B cycled both ways at 12 kmph. In the whole journey B took 10 minutes less than A. Find the distance between P and Q.