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Start learning 50% faster. Sign in nowLet x litre water be added in the mixture. Then, (32+ x) 40 = 45 × 32 1280 + 40x = 1440 40x = 160 x = 4 Therefore, 4 litre water must be added in the mixture.
A motor-cycle covers 100 km with a speed of 40 km/hr. find the speed of the motor-cycle for the next 100 km journey so that the average speed of the who...
Ram needs to cover a certain distance to reach his destination. When he drives at a constant speed of 24 km/h, he arrives 2 hours later than planned. Ho...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 25 km/hr and 15 km/hr, respectively. If the distance covered by ‘A�...
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 22.5 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average ...
A bus moves at a speed of 50 km/h and covers a specific distance in 'x' hours. This time is 2 hours longer than what a car takes to travel 400 km at the...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 16 km/hr and 14 km/hr, respectively. If the distance covered by ‘A�...
In a 1.6 km race, 'A' gives 'B' a head start of 300 meters, but still 'A' wins the race by 100 meters. If 'B' takes 15 minutes to complete the race, cal...
A person travels at the speeds of 18kmph, 24kmph, and 12kmph on the surface of an equilateral triangle and the ground. Find the average speed of the ent...
Ratio of speeds of ‘A’ and ‘B’ is 3:5, respectively. If they participate in a 400-metre race and ‘B’ gives ‘A’, a head start of ‘m’ ...
