Q: If a : b = 20:5 then find out the value of (13a-9b): (11a-7b)? – McqOptions

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1.	Q: If a : b = 20:5 then find out the value of (13a-9b): (11a-7b)?
A.	$$ {43\over 37}$$
B.	$$ {43\over 42}$$
C.	$$ {44\over 37}$$
D.	$$ {40\over 33}$$
Answer» B. $$ {43\over 42}$$

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