CBSE Class 10 Answered
linear equation
Asked by Sanjula | 13 Jun, 2009, 03:26: PM
Expert Answer
As per data in question:
A beets B by 20 m. Hence x/va =(x-20)/vb ...(1)
B beats C by 10 m. Hence x/vb=(x-10)/vc ...(2)
A beats C by 28 m. Hencex/va = (x-28)/vc ...(3)
multplying (1) and (2) and dividing by (3):
x=(x-20)(x-10)/(x-28)
x2-28x=x2-30x+200
2x-200=0
x=100 m
Answered by | 13 Jun, 2009, 05:30: PM
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