Question

2. 60 को x% बढ़ाने पर वही संख्या प्राप्त होती है जितना 80 को x% घटाने
पर, 560 को x% बढ़ाने पर क्या प्राप्त होगा?
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Answer 1

Step-by-step explanation:

According to the given condition:

$60 + x \% \: of \: 60 = 80 - x \% \: of \: 80 \\ \\ \therefore \: x \% \: of \: 60 +x \% \: of \: 80 = 80 - 60 \\ \\\therefore \: x \% \: of \: (60 +80) = 80 - 60 \\ \\\therefore \: x \% \: of \: 140 =20 \\ \\\therefore \: x \% = \frac{20}{140} \\ \\\therefore \: x \% = \frac{1}{7} \\ \\ \therefore \: 560 + x \% \: of \: 560 \\ \\ = 560 + \frac{1}{7} \times 560 \\ \\ = 560 + 80 \\ \\ =640 \\ \\ thus \\ \\ \purple { \boxed{560 + x \% \: of \: 560 = 640}}$

Thus, on increasing 560 by x% the number so obtained will be 640.