What should come in place of question mark in following questions?
28% of 480 + 37% of 560 = ?
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Solution
The difference between compound interest and simple interest on a certain sum of money at 16% per annum for 2 years is ₹ 225.28. What is the sum?
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Solution
Let the amount is P ₹.
∴ 225.28 = P ×
P = 8800 ₹
In an examination, 23% of the candidates failed in English and 57% in science. If 13% candidate failed in both the subjects then the percentage of candidates who passed in both the subjects was –
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Solution
% of candidates passed in both subjects = 100 – 23 – 57 + 13 = 33%
In a camp, 95 men had provisions for 100 days. After 5 days, 45 men left the camp. For how many days will the remaining food last now?
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Solution
Number of days = days
A man sells two books at the rate of 200 ₹ each. On one he gains 5% and on the other, he loses 5%. His gain or loss percent in the whole transaction is-
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Solution
% loss =
The difference between the cost price and selling price of an article is 240 ₹. If the profit is 10%, the cost price is-
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Solution
Let cost price is x ₹.
∴ 10 =
x = 2400 ₹
A scored 30% marks and failed by 15 marks. B scored 40% marks and obtained 35 marks than those required to pass. The pass marks is:
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Solution
(40 – 30)% = 15 + 35 = 50
∴ total marks =
∴ Pass marks =
A’s salary is 50% more than B’s salary. How much percent is B’s salary less than A’s salary ?
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Solution
Let B's salary is Rs. 100
∴ A's salary is Rs. 150
∴ Required percent =
What percent of 9 kg is 18 gms ?
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Solution
Required percent = = 0.20%