
Find the number which is greater (less) than a given number by P percent.Formula for calculating number B which is greater than A by P percent.If we have number A and need to find number B, which greater than A by P percent, then
Formula for calculating number B which is less than A by P percent.If we have number A and need to find number B, which less than A by P percent, then
Derivation of formulas:
Examples of solving problems: find the number which is greater (less) than a given number by P percentExample 1. Find the number which is greater than 40 by 5%.
Solution.
Answer: the number 42 is greater than 40 by 5%. Example 2. Find the number which is less than 40 by 5%.
Solution.
Answer: the number 38 is less than 40 by 5%. Example 3. What amount will be a year in the bank if you put $ 1,000 on deposit at 10% per annum.
Solution.
Answer: on the deposit will be $ 1,100.
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.
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