CBSE Class 12-science Answered
Ratio,Proportions and variations
Asked by | 02 Dec, 2009, 05:11: PM
Expert Answer
Let V - speed, Q - quantity of coal/km, N - Number of carriages, D - Distance covered, T - Duration of journey.
V 
Q/N
V =[(25km/0.5hr)(18 Carriages)/(10 quintals)]Q/N
V = 900(Q/10)/N
T D/V
T = [(0.5 hr)(25km/0.5hr)/(25 km)]D/V
T = D/V = D/[900(Q/10)/N]
(Q/10) = DN/(900T)
= (21)(16)/(900x28/60)
= 0.8
Q/10 = 0.8x0.8
Q = 6.4 Quintals.
Regards,
Team,
TopperLearning.
Answered by | 02 Dec, 2009, 09:10: PM
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