Question

A man got a 10%increase in his salary His new salary is 154000. What was his old salary

Answer 1

Answer:

Let the original salary be Rs.100.

Therefore New salary i.e., 10% increase

= 100 + 10 = Rs.110

\because∵ New salary is Rs.110, when original salary = Rs.100

\therefore∴ New salary is Rs.1, when original salary = \frac{100}{110}

110

100

\therefore∴ New salary is Rs.1,54,000, when original salary = \frac{100}{110}\times154000=Rs.\ 1,40,000

110

100

×154000=Rs. 1,40,000

Hence original salary is Rs. 1,40,000.

Answer 2

Answer:

Let X be his original salary

X+ 10 /100 * X = 154000

((100 +1)/10) *X= 154000

101X=1540000

X=1540000/101

X=15247.52

Hence his original salary was rs15247. 52