In a kilometre race, A can give B a start of 100 m or 15 seconds. How long does A take to complete the race?
Options:  A) 2min 10 sec  B) 2min 30 sec  C) 2min 40 sec  D) 2min 50 sec  E) 2min 20 sec
100 m = 15 sec   1 m = 15/100 sec   1000 m = 15/100*1000= 
<gadget id="calculator">15/100*1000</gadget>
<output>150</output>
150 sec=2min 30 sec   ANSWER:2min 30 sec
<result>B</result>
In a kilometre race, A can give B a start of 100 m or 15 seconds. How long does A take to complete the race?