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? Choose the most appropriate option
A) 8 kmph  B) 5 kmph  C) 4 kmph  D) 7 kmph  E) 9 kmph
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">30 / 6</gadget>
<output>5</output>

<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?
divide(30, multiply(add(1, const_2), const_2))
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 = 5 kmph answer is b