A boy is travelling from his home to school at 6km/hr and reached 7min late. Next day he travelled at 12km/hr and reached 8min early. Distance between home and school?	Choose the correct choice
A) 2km	B) 3km	C) 4km	D) 5km	E) 6km
Let the distance be x   T1 = x/6 hr   T2 = x/12hr   Difference in time = 7+8= 
<gadget id="calculator">7+8</gadget>
<output>15</output>
15=1/4hr   x/6-x/12 = 1/4   x/12 = 1/4   x = 3 km   Answer is 3km
<result>B</result>
A boy is travelling from his home to school at 6km/hr and reached 7min late. Next day he travelled at 12km/hr and reached 8min early. Distance between home and school?