KeerthanaPosted on यदि (P - Q) का 50% = (P + Q) का 30% और P का Q = x% है, तो x का मूल्य है: a30 b25 c20 d50 Answer : Option BExplanation : P−Q2=(P+Q)×30100\frac{P-Q}{2}=(P+Q) \times \frac{30}{100}2P−Q=(P+Q)×10030 ⇒5(P−Q)=(P+Q)×3\Rightarrow 5(\mathrm{P}-\mathrm{Q})=(\mathrm{P}+\mathrm{Q}) \times 3⇒5(P−Q)=(P+Q)×3 ⇒5P−3P=5Q+3Q\Rightarrow 5 \mathrm{P}-3 \mathrm{P}=5 \mathrm{Q}+3 \mathrm{Q}⇒5P−3P=5Q+3Q ⇒2P=8Q\Rightarrow 2 \mathrm{P}=8 \mathrm{Q}⇒2P=8Q ⇒P=4Q=4×P×x100\Rightarrow \mathrm{P}=4 \mathrm{Q}=4 \times \frac{\mathrm{P} \times x}{100}⇒P=4Q=4×100P×x ⇒4x100=1⇒x=25\Rightarrow \frac{4 x}{100}=1 \Rightarrow x=25⇒1004x=1⇒x=25 Rate This:NaN / 5 - 1 votesAdd comment