Question
A train can cross a pole, a bridge of 495 meter long and
platform of 440 meter long in 16 seconds, _____ seconds and 32 seconds, respectively. The value given in which of the following option will fill the blank to make the above statement true:Solution
Let the length of the train = x meter So according to question: x/16 = (x + 440)/32 32x = 16x + 7040 16x = 7040 x = 440 So the length of the train = 440 m Speed of the train = 440/16 = 27.5 m/s Time taken by the train to cross a bridge 495 meter long = (440 + 495)/32 = 935/27.5 = 34 seconds
A cone has a base radius of 6 cm and a height of 8 cm. Find its volume and slant height (use π = 3.14).
120Â Â 124Â Â 151Â Â 167Â Â Â 292Â Â Â ?
Factor the polynomial: x³ - 6x² + 11x - 6.
What is the function of the "IF" function in Excel?
The simplified value of (452 x 452 x 452 – 356 x 356 x 356)/(452 x 356 + 452 x 452 + 356 x 356) is:
A bag contains 8 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
In the figure, ABCD is a cyclic quadrilateral with O as center of the circle If ∠BOC = 136°, find ∠OBC.