In covering a distance of 30 km, Arun takes 22 hours more than Anil. If Arun doubles his speed, then he would take 1 hour less than Anil. What is Arun's speed?  Pick
A) 8kmph
B) 5kmph
C) 4kmph
D) 7kmph
E) 9kmph
Explanation:   If Arun doubles his speed, he needs 3 hour less. Double speed means half time. Hence, half of the time required by Arun to cover 30 km =3 hour   i.e., Time required by Arun to cover 30 km =6 hour   Arun's speed =30/6= 
<gadget id="calculator">30/6</gadget>
<output>5</output>
5 kmph   ANSWER IS 5kmph
<result>B</result>
In covering a distance of 30 km, Arun takes 22 hours more than Anil. If Arun doubles his speed, then he would take 1 hour less than Anil. What is Arun's speed?