Page 20 - E booklet prep 3 bader 2025 b_Neat
P. 20
1 - The ratio
The ratio is comparing between two quantities write as:
a : b or ??
??
Note:
1) the ratio is not changed if each of its two terms is multiplied in a fixed
number not equal to zero
as:
?? = ??×?? = ????
?? ??×?? ????
2) the ratio is changed if we add a real number to each of its two terms
as :
?? ? ??+??
?? ??+??
3) if ?? = ?? then ?? = ???? ?????? ?? = ????
?? ??
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