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1.A man got a 10% increase in his salary. If his new salary is ₹ 1,54,000, find his original salary.
Answer :

New salary of the man= ₹ 1,54,000
Given, the increase in salary = 10%

New salary of the man = Original salary \(\times\) (1 + \(\frac { Increase }{ 100 }\))

\(\Rightarrow\) 154000 = Original salary \(\times\) (1 + \(\frac{10}{100}\))

\(\Rightarrow\) 154000 = Original salary \(\times\) (\(\frac{110}{100}\))

\(\Rightarrow\) Original salary=\(\frac{154000\times 100}{110}\)

\(\Rightarrow\) Original salary= ₹ 1,40,000.

Thus, the original salary = ₹ 1,40,000