In a race of 2.4 Kms. A beats B by 400 m or 20 sec. What is A’s time over the course?	Choose the correct choice from the following options:  A) 1 min 30 sec  B) 1 min  C) 1 min 10 sec  D) 1min 40 sec  E) 1min 50 sec
2400*20/400= 
<gadget id="calculator">2400*20/400</gadget>
<output>120</output>
120   120-20= 
<gadget id="calculator">120-20</gadget>
<output>100</output>
100sec=1 min 40 sec.   ANSWER:1min 40 sec
<result>D</result>
In a race of 2.4 Kms. A beats B by 400 m or 20 sec. What is A’s time over the course?