Average of four numbers is 24. Sum of smallest and largest number is 53. If difference between other two numbers is 1, then find the square of second smaller number.
Let four numbers in increasing order is a, b, c and d. => a + b + c + d = 4 x 24 = 96 => a + d = 53 => b + c = 43 According to question, => c – b = 1 => b = 21, c = 22 => b² = 441
As observed from the top of a light house, 120 √3 m above the sea level, the angle of depression of a ship sailing towards it changes from 30°...
A train moving at 3/5th of its normal speed reaches its destination 10 hours late. Find the normal time taken by it.
A car travels at a speed of 90 km/h and takes 4.5 hours to cover a specific distance. A train can cover the same distance in 3 hours. If the speed of th...
The diameter of a wheel W is 63 cm. It completes 1000 rotations in 1 minute. Find the speed of the vehicle.
A train covers a certain distance at a speed of 48 km/h and the next same distance with a speed of 60 km/h and the next same distance with a speed of 80...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 25 km/hr and 20 km/hr, respectively. If the di...
A bus starts running with the initial speed of 6 kmhr and its speed increases every hour by certain amount. If it takes 14 hours to cover a distance of ...
A bicycle moves at 30 km/h and needs 9 hours to complete a journey. A van completes the same journey in 3 hours. If the bicycle's speed is increased by ...
A man travels 450 km to his home partly by train and partly by car. He takes 8 hrs 40 minutes if he travels 240 km by train and rest by car. He takes 20...
Parag starts chasing a Vipul, 6 hours after the Vipul starts running. Parag takes 7 hours to catch the Vipul. If the average speed of the Parag is 39 km...
