Percentage puzzle

Place all these numbers on the sheet to make 4 true statements

10	15	20	25	35	45
50	60	70	75	80	150

UNIT 6:PROPORTION AND PERCENTAGE PROBLEMS

KEYWORDS
Direct and inverse proportion	Unitary method
Proportional division	Percentage increase and reduction
Compound proportion	Chain percentage
Rule of three	VAT (Value Added Tax)

Unit6: Proportion and percentage problems

UNIT 5:EQUATIONS AND SIMULTANEOUS EQUATIONS

Equations and systems of linear equations. Exercises and problems.

Solving simultaneous equations

Solving simultaneous equations by elimination:

Solving simultaneous equations by substitution:

Solving simultaneous equations (graphic method):