satya2029 wrote:
Bunuel wrote:
10 litres are removed from 80 litres of solution of milk and water having ratio of milk and water as 4 : 3 and replaced with water. This operation is done a total of three times. What is the quantity of milk in the solution?
A. 245/8 litres
B. 247/8 litres
C. 249/8 litres
D. 250/8 litres
E. 255/8litres
A. 245/8 litres
B. 247/8 litres
C. 249/8 litres
D. 250/8 litres
E. 255/8litres
Initial quantity of milk= 80*(4/7)=320/7
Quantity after three successiveremoval=\((320/7)*(1-10/80)^3\)
=245/8
A:)
Thank you for this simple solution
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