Question
Train A whose length is 180m is crosses a man standing
in the bridge in 4.5 seconds. Train B whose length is165 m, is running at a speed of 63 km/hr and moving in opposite direction to that of train A. Find the time required for train A to cross train B?Solution
According to the question, 180 = 4.5 * speed of train A Speed of train A = 40 m/s Speed of train B = 63*(5/18) = 35/2 m/s 345 = (40 + 35/2)* T (345*2)/ 115 = T T = 6 seconds
Suppose the average of 322, 386, 418, 499 and 'a' is 437, then ind the value of 'a'
45, 54, 72, 95, 131, 180
A man invested ₹12,000 in a business, and his partner invested ₹15,000. After 8 months, the first partner withdrew half of his investment. If the t...
A boat can travel 36 km upstream in 6 hours. The same boat can travel 63 km downstream in 3 hours. What is the speed of the boat in still water?
330Â Â Â 240Â Â Â 160Â Â Â 90Â Â Â 30Â Â Â ?
The shortest distance between skew lines can be found using:Â Â Â Â Â Â
The following table shows the monthly sales of a company for the first five months of the year:
In a right-angled triangle, one angle is 60°. If the hypotenuse is 12 cm, find the length of the side opposite the 60° angle.
Let f: [3, ∞) → R be defined by f(x) = x² – 6x + 11. The range of f is:
