Question
What is the speed of a boat in still water?
Statement I:  The boat covers a distance of 120km in 5 hours while running upstream. Statement II:  It covers the same distance in 3 hours while running downstream. Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer:Solution
From I and II Let the speed of the boat be x km/hr Speed of the stream be y km/hr ∴ Speed of upstream x – y = 120/5 = 24……(i) Speed downstream x + y = 120/3 = 40        …….(ii) From eq. (i) and (ii), we get x = 32 km/hr and y = 8 km/hr
If a + (1/a) = 2, then find the value of (a5 + a3 + 6)/(7a – 5).Â
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Given a triangle with two sides measuring 12 cm and 16 cm, which of the following cannot be a possible length for the third side?
A man running at the speed of 6 kmph was over taken by the train moving with the speed of 78 kmph in 20 seconds. Find the length of train.
(15 x 15 x 15 + 8 x 8 x 8)/(15 x 15 -15 x 8 + 8 x 8) = ?
If (a2  + 1/a2 ) = 66, then find the value of (a3  – 1/a3 ).
- If p = 28 - q - r and pq + r(p + q) = 231, then find the value of (p² + q² + r²).
A train can cross a pole, a bridge of 720 meter long and platform of 640 meter long in 9 seconds, _____ seconds and 25 seconds, respectively.
The...
ABCD is a cyclic quadrilateral in which AB =16.5 cm. BC = x cm. CD= 11 cm. AD 19.8 cm, and BD is bisected by AC at O. What is the value of x?