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Required number = x =`(17-x)/(21-x)=1/2` ⇒ 34 - 2x = 21 - x ⇒ 2x - x = 34 - 21 ⇒ x = 13
The speed of ‘A’ and ‘B’ is 65 km/hr and 40 km/hr, respectively. If the distance covered by ‘A’ in ‘x&r...
A person travels 150 km by car at a speed of 50 km/hr, 300 km by train at 60 km/hr, and 200 km by plane at 200 km/hr. Find the average speed of the enti...
Find the distance travelled (in km) by the truck to reach point B from point A, if a car cover 45% the same distance in 2 hours 42 minutes and a truck c...
If I can walk a certain distance in 25 days when I rest 8 hours a day, how long will it take me to walk twice as far as if I walk twice as fast and res...
Sheetal rides a bike at an average speed of 40 kmph and reaches her destination in 5 hours. Hemlata covers the same distance in 4 hrs. If Sheetal increa...
Vikas covered a certain distance by bike. If he covers 40% of the distance at 40 km/h, 50% of the distance at 25 km/h and the remaining 10% distance at ...
A taxi traveled from point P to point Q without stopping. It covered the first 64 km of the journey at a speed of 32 km per hour....
A man running with the speed of 55 km/hr covers a certain distance in ‘x’ hours. If the same distance can be travelled with a speed of 60 km/h in (x...
A car travels at a speed that is 30 km/h faster than a bike's speed. The bike covers a distance of 750 km in 15 hours. Calculate the time it takes for t...
