Aptitude · all questions

Percentage
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Q201

A sample of 50 litres of glycerine is found to be adulterated to the extent of 20%. How much pure glycerine should be added to it so as to bring down the percentage of impurity to 5% ?

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Q202

A and B are two fixed points 5 cm apart and C is a point an AB such that AC is 3 cm. If the length of AC is increased by 6%, the length CB is decreased by :

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Q203

What percentage of the whole week does Ajay spend in office, if his office hours are 9 am to 5 pm from Monday to Friday ?

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Q204

A's salary was decreased by 50% and subsequently increased by 50%. How much percent does he lose ?

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Q205

A man spend

7 \frac{1}{2}

% of his money and after spending 75% of the remaining he had Rs. 370 left. How much money did he have :

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Q206

A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs. 8710, the amount of his monthly savings is :

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Q207

A number is increased by 15% and then decreased by 25% and the number becomes 22 less than the original number. The original number is :

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Q208

What is the difference between 0.6 and 0.6% ?

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Q209

A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease ?

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Q210

In an office, 40% of the staff is female. 70% of the female staff and 50% of the male staff are married. The percentage of the unmarried staff in the office is :

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Q211

2 is what percent of 50 ?

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Q212

15% of 45% of a number is 105.3. What is 24% of that number.

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Q213

The ratio 5 : 4 expressed as a percent equals :

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Q214

If 60% of A =

\frac{3}{4}

of B, then A : B is :

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Q215

In an examination, 93% of students passed and 259 failed. The total number of students appearing at the examination was :

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Q216

When 75 added to 75% of a number, the answer is the number. Find 40% of that number.

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Q217

If 15% of (A + B) = 25% of (A - B), then what percent of B equal to A ?

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Q218

When 60 is subtracted from 60% of a number, the result is 60. The number is :

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Q219

In an examination A got 25% marks more than B, B got 10% less than C and C got 25% more than D. If D got 320 marks out of 500, the marks obtained by A were :

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Q220

A reduction of 10% in the price of an apple enable a man to buy 10 apples more for Rs. 54. The reduced price of apples per dozen is :

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