In an examination a candidate got 30% marks and failed by 30 marks. If the passing marks are 60% of the total marks, then the maximum marks will be:
Passing marks are 0.6x
so 0.3x + 30 = 0.6x x = 100
45% of 750 - 25% of 480 = ?
Given expression = ( x 750) - ( x 480) = (337.50 - 120) = 217.50
What percent is 120 of 85 ?
=> p = 12000/85 = 141.17 %
A number increased by 30% gives 390. The number is
Let the number be 'N'Given N + 30N/100 = 390=> 130N/100 = 390=> N = 390 x 10/13=> N = 300.
If 25% of a number is subtracted from a second number, the second number reduces to its four-sixth. What is the ratio of the first number to the second number ?
Let the numbers be p & q
q-p/4 = 4q/6
=> q-4q/6 = p/4
=> 2q/6 = p/4
=> p/q = 4/3
A number, when 35 is subtracted from it, reduces to its 80 percent. What is four - fifth of that number ?
x - 35 = 80x/100
=> x = 175
=> 4x/5 = 4x175/5 = 140.
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