B is what percentage of A
ФFormula for calculating what percentage of the number B from the number A.
If you know two number A and B and need find, B is what percentage of A, then
For the derivation of this equation using the method of solving problems with percentage
|"All"||=||100%||=>||"Part in %" =||"Part" · "100%"|
|"Part"||"Part in %"||All|
Examples of solving problems: B is what percentage of A
Example 1.5 is what percentage of 40.
|5 · 100%||= 12.5%|
Answer: 5 is 12.5% of 40.
Example 2.In store book costs $ 400 and $ 380 on the market. Find what percentage of the market price in relation to the store?
|380 · 100%||= 95%|
Example 3.The bank deposit put $ 10,000 in a year have profited of $ 1200, what the interest rate was in the bank.
Solution. The interest rate is equal to a percentage, which is the profit of the deposit amount
|1200 · 100%||= 12%|
Answer: the interest rate was 12%.
Percent Percent Definition. Main information Decimal to Percent. Percent to Decimal The method of solving problems with percentage
The most common types of problems with percent: Find P percent of A B is P percent of what? B is what percent of A? Find the number which is greater (less) than a given number by P percent Find the number A if known number B which greater (less) than A by P percent
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