1.

If 20% of(P + Q) = 50% of(P— Q),then find P: Q1). 7:82). 7:33). 7:54). 5:7

Answer»

$\FRAC{20(P+Q)}{100}=\frac{50}{100}(P-Q)$

$\RIGHTARROW \frac{P+Q}{P-Q}=\frac{5}{2}$

$\Rightarrow \frac{2P}{2Q}=\frac{5+2}{5-2}$ (By componendo and dividendo)

$\Rightarrow \frac{P}{Q}=\frac{7}{3}$ or 7:3



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