Question
Quantity of water in a 320 litres mixture (alcohol +
water) is 20 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 50% of the whole mixture.Solution
Quantity of water in the mixture = (320 – 20)/2 = 150 litres So, Quantity of alcohol in the mixture = (320 – 150) = 170 litres Total quantity of the mixture = 170 x (100/50) = 340 litres Therefore, quantity of water to be mixed = 340 – 320 = 20 litres
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
 First row: 84, 42, 49
Second row: ...
Find the missing number.
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
Select the number which can be placed in the column of question mark sign.
M/14 : O/12 : : U/6 : ?
What will come in the place of question mark?
Select the number from the given option that can replace the question mark [?] in the following series.
515, 517, 520, 525, 532, 543, 556, ?
In the following expression find the missing term:
Choose the correct alternative from the given ones that will complete the series.
3.5 , ?, 8.3, 10.7, 13.1 , 15.5
