Q. One-ninth of a certain number exceeds its one-tenth by 4. The number is
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Q. If the radius of a circle is decreased by 50%, find the percentage decrease in its area.
Q. If 35% of A’s income is equal to 25% of B’s income, then the ratio of A’s income t...
Q. In how many years will a sum of money double itself at 18.75% per annum simple interest?
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