'P' is a variable such that if 20% of it is added to its one-fifth then the result is equal to 12 subtracted from seven tenths of p. What is the value of p?
Solution
Correct Answer: Option D
প্রশ্নে বলা হচ্ছে, 20% P এর সাথে যদি P/5 যোগ করা হয় তবে ফলাফল হবে \((\frac{{7p}}{{12}} - 12)\) . p এর মান বের করতে হবে ।
দেয়া আছে, 20% of p = \(\frac{{20p}}{{100}} = \frac{p}{5}\)
প্রশ্নমতে, \(\frac{p}{5} + \frac{p}{5} = \frac{{7p}}{{10}} - 12\)
=> \(\frac{{2p}}{5} = \frac{{7p - 120}}{{10}}\)
=> 2p = \(\frac{{7p - 120}}{2}\)
=> 7p - 120 = 4p
=> 7p - 4p = 120
=> 3p = 120
=> P = 120/3
P = 40
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