.
It is 0.75*840, or 3/4 of 840.
Calculate it by any way.
Use your calculator or other tools in your computer.
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On percentage, see the lessons
- Percentage problems
- Percentage word problems (Type 1 problems, Finding the Part)
- Percentage word problems (Type 2 problems, Finding the Rate)
- Percentage word problems (Type 3 problems, Finding the Base)
- More complicated percentage problems
- Problems on percentage that lead to unexpected results
in this site.
They are written specially for you.
Read them and become an expert in this area.
Start from the very first lesson of the list.