P beats Q by 125 meter in a kilometer race. Find Q's speed if P's speed is 40 meter/sec.
Select:
A) 21 meter/sec	B) 7 meter/sec	C) 14 meter/sec	D) 18 meter/sec	E) 35 meter/sec
P's speed =40 m/s   P's distance = 1000m (as it is a km race)   t = 1000/16 =25 sec   Q's distance = 1000-125= 
<gadget id="calculator">1000-125</gadget>
<output>875</output>
875m   Q's time to complete this distance is also 62.5 sec.   Q's speed= dist/time = 875/25= 
<gadget id="calculator">875/25</gadget>
<output>35</output>
35 m/s   Hence 35 meter/sec is the answer.
<result>E</result>
P beats Q by 125 meter in a kilometer race. Find Q's speed if P's speed is 40 meter/sec.