Tinnitus meaning
Tinnitus is the perception of noise or ringing in the ears in the absence of an external sound source. It can be intermittent or continuous and vary in pitch and intensity. Tinnitus is often associated with hearing loss, exposure to loud noise, ear infections, and other ear-related conditions. It can also be a symptom of underlying health issues such as high blood pressure, diabetes, or head and neck injuries. While there is no cure for tinnitus, management strategies include sound therapy, hearing aids, cognitive behavioural therapy, and lifestyle modifications to reduce stress and minimize the impact of tinnitus on daily life
Tinnitus 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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