Lactose Intolerance meaning
Lactose intolerance is a digestive disorder caused by the inability to digest lactose, the main sugar in milk and dairy products. This condition occurs when the small intestine does not produce enough of the enzyme lactase, which is necessary to break down lactose into glucose and galactose for absorption. Symptoms of lactose intolerance typically include bloating, diarrhea, gas, and abdominal pain after consuming dairy products. The severity of symptoms varies among individuals. Management of lactose intolerance involves dietary adjustments to reduce or eliminate lactose intake, using lactase enzyme supplements, and choosing lactose-free or low-lactose dairy alternatives.
Lactose Intolerance 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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