A boy is travelling from his home to school at 12 km/hr and reached 7 min late. Next day he traveled at 16 km/hr and reached 8 min early. Distance between home and school? Select: A) 12km B) 13km C) 14km D) 15km E) 16km
Let the distance be x   T1 = x/12 hr   T2 = x/16hr   Difference in time = 7+8= 
<gadget id="calculator">7+8</gadget>
<output>15</output>
15=1/4hr   x/12-x/16 = 1/4   x/48 = 1/4   x = 12 km   12kmnswer is 12km
<result>A</result>
A boy is travelling from his home to school at 12 km/hr and reached 7 min late. Next day he traveled at 16 km/hr and reached 8 min early. Distance between home and school?