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Aman gave 40% of the amount he had to Rohan. Rohan in turn gave one-fourth of what he received from Aman to Sahil. After paying Rs. 200 to the taxi driver out of the amount he got from Rohan, Sahil now has Rs. 600 left with him. How much will Aman have.
(A) 4000
(B) 8000
(C) 12000
(D) Data inadequate

Answer
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Hint: In this type of question we have to choose one person’s amount as variable “X” and rest are calculated by converting all in the form of variable X.

Complete step-by-step answer:
Let the amount with Aman be Rs. X, because we have to find how much money Aman will have.
Now according to the question Aman gave 40% of the amount he had to Rohan.
Amount received by Rohan = 40% of X
That is 40×X100
Now amount received by Sahil is 14of Rohan’s amount
So total amount received by Sahil = 14×40×X100
 Total amount received by Sahil = X10
Now the question says that after giving Rs.200 to the taxi driver Sahil have Rs.600as remaining amount
So 600+200=X10
800=X10
By using cross-multiplication in above equation
From this we get X=8000
And we choose X as the amount of Aman, therefore we get an amount of Aman as Rs.8000.
Option B is the correct answer.

Note:This is the basic question of linear equations in one variable. Linear equations in one variable are always in the form of ax+b=c. In this type of question do not take more than one variable that creates a solution complicated.
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