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Let initial quantity of alcohol and water be 2x and 3x. ⇒ 2x + 3x = 55 ⇒ 5x = 55 ⇒ x = 11 Initial quantity of alcohol = 2x ⇒ 22 litres Initial quantity of water = 3x ⇒ 33 litres Let the water to be added be x litres. 22/(33 + x) = 1/5 ⇒ 110 = 33 + x ⇒ 77 = x Therefore, quantity of water added is 77 litres.
3600 600 120 30 ? 5
...2 5 10 ...
19 8 ? -14 63 - 36
...Find the 31st term of the series 25, 29, 33……
230, 34.5, ‘?’, 0.77625
31 35 60 124 ? 441
...Study the given pattern carefully and select the number that can replace the question mark (?) in it.
4 7 6
15 ? 21
44 68 60
A series is 4, 5, 17, 88, 620, 5585
If another series a, b, 23, d, e, f follows the same pattern as the given number series, then find the approx...
19.11 × 5.98 + 20.03 × 3.12 – 34.95 + 97.9 × 3.02 =?
35, 36, 40, 49 , 65 , ?
