Question
From a barrel that contains pure alcohol, 10% alcohol is
withdrawn and replaced with water. If the same process is repeated once more, then the quantity of alcohol remaining in the mixture would be 81 litres. Find the final quantity of water in the barrel.Solution
ATQ, Let the initial quantity of alcohol in the barrel be '100x' litres ATQ; 100x X (0.90)² = 81 Or, 81x = 81 Or, x = 1 So, original quantity of alcohol in the barrel = 100 X 1 = 100 litres Required quantity of water = 100 - 81 = 19 litres
- Figure A is related to B following a certain pattern. Following the same pattern, figure C is related to D. Study the pattern and select the figure which s...
Select the figure from the given options that will come next in the following figure series.
Which figure should replace the question mark (?) if the series were to continue?
Select the figure from the alternatives which will complete the pattern in given question figure.
Figure A is related to B following a certain pattern. Following the same pattern, figure C is related to D. Study the pattern and select the figure whic...
Identify the figure from the given options that completes the pattern of the question figure.
Find out the missing figure (?) of the problem from among the given answer figures.