Tachycardia meaning
Tachycardia is a condition characterized by an abnormally fast heart rate, typically defined as a resting heart rate exceeding 100 beats per minute. It can result from various factors, including stress, anxiety, fever, exercise, and medical conditions such as heart disease, hyperthyroidism, and electrolyte imbalances. Symptoms of tachycardia may include palpitations, shortness of breath, dizziness, and chest pain. Treatment depends on the underlying cause and may involve lifestyle modifications, medications, or medical procedures such as catheter ablation to restore normal heart rhythm and prevent complications.
Tachycardia 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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