Kidney Stones meaning
Kidney stones are hard deposits formed from minerals and salts that crystallize in the kidneys. They can vary in size from tiny grains to large stones and can cause severe pain when they move through the urinary tract. Factors contributing to kidney stone formation include dehydration, dietary habits, genetic predisposition, and certain medical conditions. Symptoms of kidney stones include intense pain in the back or side, blood in the urine, nausea, vomiting, and frequent urination. Treatment options range from increased fluid intake and pain management to medical procedures such as lithotripsy (breaking stones with shock waves) or surgical removal in severe cases.
Kidney Stones meaning: Explanation, Formulae and Practice
These topics connect maths with money decisions. Always identify cost price, selling price, principal, rate and time before using a formula.
Practical Formulae
- Profit = selling price - cost price.
- Loss = cost price - selling price.
- Profit percentage = (profit / cost price) x 100.
- Simple interest = (principal x rate x time) / 100.
- Amount = principal + interest.
Solved Example
Question: An item is bought for Rs. 500 and sold for Rs. 575. Find the profit percentage.
Working: Profit = 575 - 500 = 75. Profit percentage = (75 / 500) x 100.
Result: Profit percentage = 15%.
Unanswered Practice Questions
Try these yourself before checking notes or calculators.
- Find the loss percentage when CP is Rs. 800 and SP is Rs. 720.
- Find simple interest on Rs. 5,000 at 8% per year for 2 years.
- A shopkeeper marks an item at Rs. 1,200 and gives 10% discount. Find the selling price.
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