Question
Taps Q and R can fill a tank in 24 minutes and 32
minutes, respectively. The efficiency of tap S is 75% greater than that of tap Q. If tap R's efficiency is increased by 66â…”%, calculate the time it would take for taps S and the modified R to fill the tank together.Solution
Let the total capacity of the tank be 96 units (LCM of 24 and 32) . So, the efficiency of tap 'Q' = (96/24) = 4 units/minute So, the efficiency of tap 'R' = (96/32) = 3 units/minute So, the efficiency of tap 'S' = 4 X 1.75 = 7 units/minute Increased efficiency of tap 'R' = 3 X (5/3) = 5 units/minute So, combined efficiency of taps 'R' and 'S' = 7 + 5 = 12 units/minute Therefore, required time = (96/12) = 8 minutes
2600, 3000, 1759, 1275, 746, 170
Find the Wrong number in the given number series.
29, 76, 123, 166, 209, 256156, 182, 212, 240, 272, 306
32, 41, 66, 115, 236, 415
25Â Â Â 26Â Â Â Â 28Â Â Â Â 32Â Â Â Â 42Â Â Â Â 56
150, 900, 300, 1800, 600, 3700, 1200
- Find the wrong number in the given number series.
10, 14, 23, 48, 99, 218 140Â Â Â 150Â Â Â 175Â Â Â Â 185Â Â Â Â 210Â Â Â Â Â 225Â Â Â Â Â
...Find the wrong number in the given number series.
10, 17, 26, 39, 59, 85
In each of the following giving number series, a wrong number is given. Find out the wrong number?
82, 81, 86, 110, 168, 287
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