Question
A and B are travelling towards each other with a speed
of 40 km/hr and 50 km/hr. If they started at same time and A covered 20 km less distance than B before meeting him, then find the distance between them before starting.Solution
Since, the time taken by A and B is same, therefore the ratio of the distance covered by them will be equal to the ratio of their speeds. Therefore, ratio of the distance covered by A and B = 40:50 = 4:5 Let the distance covered by A and B be 4x km and 5x km According to the question, 5x – 4x = 20 Or, x = 20 Therefore, distance between them before starting = 5x + 4x = 9x = 180 km
 44, 57, 81, 119, 170, 234, 311.
P, Q and R invested their capitals in a business in the ratio 5:6:4 respectively. At the end of the year, they received profits in the ratio 10:18:8 res...
- Find the wrong number in the given number series.
9, 13, 22, 47, 96, 197 - Find the wrong number in the given number series.
85, 117, 170, 244, 339, 465 Direction: Find the wrong number in given number series.
640, 663, 713, 794, 920, 1065
18, 19, 27, 54, 116, 243
Find the wrong number in the given number series.
976, 720, 495, 297, 130, - 14Â
9Â Â Â Â Â Â Â Â Â Â Â Â Â 17Â Â Â Â Â Â Â Â Â Â 53Â Â Â Â Â Â Â Â Â Â 103Â Â Â Â Â Â Â Â 310Â Â Â Â Â Â Â Â 619
...- In the given number series, find the wrong number.
3, 6, 12, 25, 48, 96, 192 Find the wrong number in given number series.
136, 184, 250, 304, 376, 456
