Question
P says to Q “I am four times as old as you were
when I was as old as you are”. The difference between their ages is 15 years. Find the sum of their ages?Solution
P says to Q “I am four times as old as you were when I was as old as you are”. P = 4[Q- (P-Q)] P = 4Q – 4P + 4Q 5P = 8Q ………………….(i) P – Q = 15 …………………(ii) By solving (i) and (ii), we get Q = 25 & P = 40 Therefore, sum of their ages = 40 +25 = 65 years
A vessel is completely filled with milk. If 55% of the milk is replaced with water then only 106.2 ml of milk will be left in the vessel. What is the to...
150 litres of a mixture contains 30% milk and rest water. If βxβ litres of milk is added into the mixture then quantity of water in the final mixtur...
- 270 litres of mixture 'X' contains milk and honey, only in the ratio 7:2, respectively and 480 litres of mixture 'Y' contains milk and honey, only in the r...
If 50L of liquid containing 20% spirit is added with 15L of water then what would be the percentage of spirit in the resulting mixture?
A 78-liter mixture contains milk and water in a ratio of 6:7. If an additional 24 liters of milk and 48 liters of water are added to the mixture, what w...
A 456 ml mixture consists of milk and water in a 12:7 ratio. If 'x + 22' ml of milk and 'x - 18' ml of water are added, the new ratio of milk to water b...
- A 48 litres mixture of milk and water contains them in the ratio 3:1. After removing 12 litres of the mixture and replacing it with βxβ litres of water...
In what ratio coffee at 315 Rs/kg should be mixed with the coffee at 355 Rs/kg so that after mixture its rate become 330 Rs/kg if the quantity of 1st ty...
A vessel is completely filled with milk. If 33% of the milk is replaced with water then only 603 ml of milk will be left in the vessel. What is the tota...
Two mixtures A and B are in the ratio of 3:2. Mixture A contains Γ% of milk and a% of water. Mixture B contains y% of milk and b% of water. If mixture ...