Question
A mixture contains milk and water in the ratio of 3:2
respectively. If 34 litres of milk and 34 litres of water are added to this mixture, then respective ratio of milk and water changes to 10:7, respectively. Find the initial quantity of the mixture.Solution
Let, amount of milk and water in mixture be 3x litres and 2x litres respectively. According to question, ⇒ (3x + 34): (2x + 34) = 10:7 ⇒ 21x + 340 = 20x + 238 ⇒ 21x – 20x = 340 – 238 ⇒ x = 102 So, initial quantity of mixture = 102 × (2 + 3) = 510 litres
How many seconds will a train 60 m in length, travelling at the rate of 40 km an hour, take to pass another train 90 m long, proceeding in the same dire...
A train 275 metre long takes 33 sec to cross a man running at a speed of 5 km/hr in the direction same to that of train. What is the speed of the train?
- Two scooters βGβ and βHβ started at the same time from two towns βUβ and βVβ towards each other. When they met after 4 hours, scooter βHοΏ½...
A train can cross a pole and a platform of 300 meters long in 8 sec and 20 sec respectively. Find the time taken by the train to cross another platform ...
A train travelling at the speed of 72 km/hr crosses another train, having 40 meters less length and travelling in opposite direction at the speed of 54 ...
A train 450 metre long takes 60 sec to cross a man running at a speed of 7 km/hr in the direction opposite to that of train. What is the speed of the tr...
- A fast-moving train at 55 m/s crosses a lamp post in 14 seconds. How long will it take for the train to completely pass through a 900-metre-long railway st...
Train 'Express Star' is moving at a speed of 90 km/hr, traveling towards train 'Speedy Voyager,' which is twice as long as 'Express Star' and has the sa...
Two trains start from station A and B travel towards each other at speed of 50 kmph and 60 kmph respectively. At the time of their meeting, the second t...
A train that is 360 metres long passes a signal post in 18 seconds. How long will it take to pass a bridge that is 240 metres long?