.
If Emily scored 50% higher than Jack, it means that she has 1.5 as much / (as many) scores as Jack has.
For example, if Jack' score is 50, then Emily' score is 50+25 = 75.
if Jack' score is 60, then Emily' score is 60+30 = 90.
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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)
- Simple percentage problems
- More complicated percentage problems
- Advanced problems on percentage
- Problems on percentage that lead to unexpected results
- Simple interest percentage problems
- Compound interest percentage problems
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.
Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.