Question
(1/3) + (2/5) + (3/4) + (11/10) = 3 –
(?/12) What will come in the place of question mark (?) in the given expression?Solution
(1/3) + (2/5) + (3/4) + (11/10) = 3 – (?/12) (1 × 20 + 2 × 12 + 3 × 15 + 11 × 6) ÷ 60 = 3 – (?/12) (20 + 24 + 45 + 66) ÷ 60 = (36 - ?)/12 155/60 = (36 - ?)/12 36 - ? = (155/60) × 12 31 = 36 - ? ? = 5
A train, which is moving at the rate of 60 miles per hour, is brought to rest in 3 minutes with a uniform retardation, find this retardation, and also t...
- Train 'R' starts from Lucknow to Kanpur at 5:00 a.m. Train 'S' starts from Kanpur to Lucknow at 7:00 a.m., traveling at 50 km/h. They cross each other at 1...
Trains 'M' and 'N' travel at speeds of 72 km/h and 90 km/h, respectively. It takes train 'M' 32 seconds to pass a certain platform, while train 'N' requ...
Train M, ‘x’ metres long crosses (x – 30) metres long platform in 20 seconds while train N having the length (x + 30) metres crosses the same plat...
Two trains started from stations ‘A’ and ‘B’ at same time and started travelling towards each other at speeds of 80 km/hr and 70 km/hr, respecti...
A train takes 24 seconds to pass a pole and 34 seconds to completely cross a tunnel that is 300 metres long. How much time will a motorbike, moving at 6...
A train travelling with a speed of 90 km/h can cross a pole in 8 seconds. Find the time taken by the train to cross a 300 metres long platform if the sp...
770 metres long train crosses a man who is moving in the same direction with a certain speed, in 35 seconds. If the same train can cross a tree in 22 se...
Two cities M and N are 432 km apart. A bus leaves M at 7:15 a.m. at 48 km/h. Another bus leaves N at 8:45 a.m. towards M at 72 km/h. At what time will t...
A train crosses a pilar in 20 seconds and a platform of length 300 metres in 25 seconds,then what will the 120% of the length of the train.
Relevant for Exams:
