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Let total capacity of the tank is 96 litres (LCM of 32 and 24) Quantity of water filled by tap ‘A’ in one hour = 96/32 = 3 litres Quantity of water filled by tap ‘B’ in one hour = 96/24 = 4 litres Let tap ‘A’ is closed after ‘x’ hours So, 7 × x + 4 × (15 – x) = 96 Or, 3x = 36 Or, x = 12 hours
If a + (1/a) = 2, then find the value of (a5 + a3 + 6)/(7a – 5).
If a 2 + b 2 = 89 and a 2 - b 2 = 39, then find the value of a 3 - b 3 - 3...
Out of total number of people in an office, 40% are males. Ratio of number of married to that of unmarried people in the office is 3:2 while ratio of nu...
If x + y = 4 and (1/x) + (1/y) = 24/7, then the value of (x3 + y3).
A, B and C are three points on a circle such that the angles subtended by the chord AB and AC at the centre O are 110° and 130°, respectively. Then th...