Question
A car travels a certain distance in 4 hours at a speed
of 60 km/h, then covers the remaining distance in 2 hours at a speed of 90 km/h. Find the total distance covered by the car.Solution
Let the total distance be D. In the first part of the journey, time = 4 hours and speed = 60 km/h. Distance covered = 60 × 4 = 240 km. Let the remaining distance be D - 240. In the second part, time = 2 hours and speed = 90 km/h. Distance covered = 90 × 2 = 180 km. Thus, D = 240 + 180 = 420 km.
124, 128, ?, 135, 110, 146
290, 571, 900, ?, 1485, 1890
Find the missing number in the given number series.
2, 5, 11, 23, 47, ?16, 20, 47, 63, 188, ?
What will come in place of the question mark (?) in the following series?
520, 519, 511, ?, 420, 295
- What will come in place of (?) in the given number series.
2, 6, 18, 54, ?, 486 1056 264 132 33 ? 4.125
...100, 120, 260, ?, 3220, 16120
2.5, 5, 15, 60, ?, 1800, 12600
What will come in place of the question mark (?) in the following series?
32, ?, 30, 46, 28, 44
