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ATQ,
Let the actual speed of Rahul be ‘s’ km/hr. And, actual time taken by him to reach his destination is ‘t’ hours. So, total distance covered by Rahul in ‘t’ hours = {s × t} km---------- (1) Also, Distance covered by Rahul while travelling at 40% less speed = 60% of s × (t + 3) = 0.6 × s × (t + 3) km ----------- (2) From equation (1) and (2), we have s × t = (3/5) × s × (t + 3) Or, 5st = 3st + 9s Or, 2st = 9s So, t = 4.5 So, required time = 4.5 hours
1 9 64 255 755 1835
...1 1 8 4 27 9 ?
...63 189 315 378 567 693
...3601 3602 1803 604 154 36
...The number of terms in the sequence 20, 25, 30, ….., 160 is:
7 6 45 40 312 ...
There are two series I and II. Logic in both the series are different.
Series l: 3, 12, 28, 53, 89, .
Series II: 259, 270, 283, 300, 319.<...
Direction: Which of the following will replace ‘?’ in the given question?
5, 18, ‘?’, 126, 296, 586, 1044
Choose the number which is different from others in the group.
10 59 ? 1169 3503 7001
...