100 a + 200 b = 25/6 , 60 a + 240 b =4 solve by eliminating method
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(i)
100a + 200b = 25/6
600a + 1200b = 25
Multiplying equation by 10, and subtracting from it, we get
1200b = 15
b = 15/200 = 1/80
Putting equation, we get
60a + 3 = 4
60a = 1
a = 1/60
Now, a= 1/u = 1/60 and b = 1/v = 1/80
u = 60 and v = 80
Therefore, speed of train = 60 km/h and speed of bus = 80 km/h
Hope you understand.....................................
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u = 60 and v = 80 is your answer....✌️
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