Question
Quantity of water in a 250 litres mixture (alcohol +
water) is 30 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed so that the quantity of alcohol in the mixture becomes 40% of the whole mixture.Solution
Quantity of water in the mixture = (250 – 30)/2 = 110 litres So, Quantity of alcohol in the mixture = (250 – 110) = 140 litres Total quantity of the mixture = 140 x (100/40) = 350 litres Therefore, quantity of water to be mixed = 350 – 250 = 100 litres
3960, 660, 720, 122, 180, 30
2400,3600,5400,7200,12150
210, 140, 105, 84, 70, 63, 52.5
112, 236, 374, 546, 790, 1376
88, 112, 78, 120, 64, 136
Find the wrong number in the series.
3, 6, 18, 72, 360, 2160, 151202824 2314 1973 1759 1634 1574
120, 136, 111, 147, 93, 162, 81
Find the wrong number in given number series.
1116, 1135, 1158, 1187, 1224, 1278.
Find the wrong number in given number series.
2658, 2654, 2681, 2645, 2999, 2918