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