If 150 is increased by 60% and then decreased by x percent, the result is 192. What is x?
Solution
Correct Answer: Option A
Solution:
প্রশ্নে বলা হচ্ছে , 150 কে 60% বাড়ানো হলে এবং পরে x% কমিয়ে 192 পাওয়া গেল । x এর মান বের করতে হবে ।
(150 + 150 \( \times \) 60%) = 150 + 150 \( \times \) \(\frac{{60}}{{100}}\) = 150 + 90 = 240
240 - 240 \( \times \) x% = 192
=> 240 - 240 \( \times \) x/100 = 192
=> 240 - 192 = \(\frac{{12x}}{5}\)
=> \(\frac{{12x}}{5}\) = 48 => 12x = 48 \( \times \) 5
=> x = \(\frac{{48 \times 5}}{{12}}\) x = 20
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