A bus covered a distance of 250 km, partly at an average speed of 40 kmph and partly at 60 kmph. If the total time taken is 5.4 hours, then the distance covered at 40 kmph is	Choose the correct choice from the following
A) 130 km	B) 120km	C) 100km	D) 140km	E) 148
Let the partial distance covered at 40 kmph be X   Let the another partial distance covered at 60 kmph be (250 - x)   Thus, x/40 - (250 - x)/60 = 5.4   or, x/40 + (250 - x)/60 = 5.4   or, (3x + 500 - 2x)//120 = 5.4   or 500 + x = 648   x=148   ANSW148R:148
<result>E</result>
A bus covered a distance of 250 km, partly at an average speed of 40 kmph and partly at 60 kmph. If the total time taken is 5.4 hours, then the distance covered at 40 kmph is