Question
The Height of a metallic hollow cylinder is 28 cm and
the difference between its inner curved surface Area and outer curved Surface area is 66cm². If the cylinder is made up of Volume 99cm³ metal. Find its inner radius.Solution
In a parking lot, 80% of the vehicles are motorcycles, and the rest are trucks. Find the ratio of the number of wheels of motorcycles to that of trucks ...
Out of the total income of Ravi, he spends 50% on food, 10% on rent and 20% on groceries. Out of the remaining income, he donates 30% in a charity and s...
- 35% of ‘p’ and 55% of ‘q’ together sum up to 190. If ‘q’ is 50 greater than ‘p’, then find the value of (2p – q).
The income of ‘A’ increases by 30% every year. If his income 3 years hence from now will be Rs. 34273.2, then find his income a year before from now...
A number is increased by 20% and then decreased by 25%. Find the net change %.
Incomes of 'A' and 'B' are in the ratio 11:13, respectively while their expenditures are Rs. 22,000 and Rs. 26,000, respectively. If the ratio of incom...
Rajesh spent 49% of his monthly income on food and 51% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
The population of a town increases by 10% in the first year and by 20% in the second year. If the population at the end of the second year is 39,600, fi...
A man spends 20% of his income on food, 30% on rent, 10% on transportation, and 15% on other expenses. He saves the remaining ₹12,750. What is his mon...
In a library 50% of the books are in English, 70% of the remaining books are in Bengali and rest of the books are in Tamil. If there are 5800 books in E...
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