X who likes Green lives to the immediate west of R who likes Yellow and lives in Flat-3 of Floor-1. T and P lives in the same flat which is Flat-3. Note: Here we get one more case. 
Number of Flats towards west of T is equal to the number of flats towards east of V, but in different floors. Note: Here we get one more possibility from each case. Thus 4 we have total cases 
U does not live on Floor-2 but lives to the East of the one who likes Red who does not live in an even numbered flat. W does not like Red and lives one of the extreme west flat. Note: U must live on Flat-2 of Floor-3 (only possibility in all cases). Also we get only possibility for W in each case, except case-2 
The one who likes Blue colour and S lives in the same flat. Q lives northwest of S Note: Case-2 gets rejected since Q lives northwest of S is not possible. 
The one who likes Orange lives to the immediate west of the one who likes Grey and T likes White. Persons like Orange colour and Black colour lives in the same flat and W does not like Black colour. The one who likes Pink doesn’t live in topmost floor Note: T likes White as given. Finally P likes Pink in case-1-a Case-1 gets rejected since W doesn’t like Black Case-2-a gets rejected since the one who likes Pink doesn’t live in topmost floor Final arrangement 
In a mixture of milk & water, 70 litres water is mixed due to which ratio changes from 3 : 4 to 1 : 3. Find initial quantity of mixture. (in litres)
In a vessel the ratio of alcohol to water is 6:1. If 21 liter of mixture is taken out from the vessel and 1 liter water is added, then the ratio of alco...
Quantity of water in a 350 litres mixture (alcohol + water) is 22 litres less than the quantity of alcohol in it. Find the quantity of water to be mixe...
364 ml of mixture ‘A’ contains milk and water in the ratio 2:5 respectively. If the quantity of milk in mixture ‘B’ is 37.5% more than that in m...
A container was initially filled to the brim with milk. After removing 52% of the milk, 348 ml remained in the container. Calculate the original volume ...
A 280 ml mixture is composed of milk and water in the ratio 11:9. If an equal amount 'x' ml of both milk and water is added, the new ratio of milk to wa...
320 ml of mixture ‘A’ contains milk and water in the ratio 3:7 respectively. If the quantity of milk in mixture ‘B’ is 37.5% more than that in m...
403 ml of mixture contains milk and water in the ratio of 8:5 respectively. If 102 ml of milk and 120 ml of water is added into it then ratio of milk to...
A container contains a mixture of 50 liters of milk and water in the ratio 5:3. If 8 liters of the mixture is taken out and replaced by water, what is t...
In a mixture of milk & water, 30 litres water is mixed due to which ratio changes from 3 : 4 to 1 : 2. Find initial quantity of mixture. (in litres)
