Question
A man can row at 3 kmph in still water. If the velocity
of current is 2 kmph and it takes him 6 hour to row to a place and come back, how far is the place?Solution
Let the distance be x km. Speed upstream = 3 – 2 = 1 kmph Speed downstream = 3 + 2 = 5 kmph => (x/5) + (x/1) = 6 => (x + 5x)/5 = 6 => 6x = 30 => x = 5 km
Which two signs should be interchanged to make the following equation correct?
38 ÷ 26 – 2 + 5 × 4 = 45
In the word ‘PAVEMENT’, first all the opposites of each letter are written, then all the letters formed are written in an alphabetical order form,...
Monthly income of A is Rs. 6000 and he saves 25% of his monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is inc...
If ‘P’ means (÷), ‘Q’ means (×), ‘R’ means (+), and ‘S’ means (-), then what is the value of the expression:
44 S 96 P 12 R 11 ...
If ‘#’ means ‘-’, ‘@’ means ‘+’, ‘$’ means ‘÷’ and ‘&’ means ‘×’, then what is the value of the following expression?<...
If A $ B means A X B, A € B means A ÷ B, A & B means A + B and A @ B means A - B, then what is the value of '178 & 100 € 25 @ 18 $ 4 & 22'?
...Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
[(345 + 255) ÷ 30 X 12 ...
If,
40 – 14 means 560,
168 + 8 means 21,
26 ÷ 2 means 28,
8 x 7 means 1,
then 410 – 7 x 290 ÷ 350 + 7 x 21 = ?
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then ____ is the value of the expression.
25 A 5 B 8 D 6 C 4...
Mohit and Sudesh bought pens and notebooks from the same shop. Mohit bought 3 pens and 6 notebooks by paying an amount of ₹180. Sudesh bought 5 pens a...
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