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A normal healthy human heart beats 72 times per minute on average. This rate can vary depending on factors like age, fitness level, and activity.
X and Y are two numbers. Their average is 280, and the sum of X and Y is 160% of X. What percentage of X is the difference between X and Y?
The reduction of 20% in the price of rice enables a person to obtain 50 kg more for Rs.450. Find the original price of rice per kg.
What is the equivalent single discount percentage for two successive discounts of 20% and 10%?
A man spends 40% of his income on rent, 30% on food, and 20% on other expenses. He saves the remaining ₹12,000. What is his total income?
A person spent 20% of his monthly income on food and 70% of the remaining on rent. If amount spent on rent is Rs 840, then find the amount spent on food.