Question

On increasing the salary of a man by 25%, it becomes ₹ 20000. What was his original salary?

(a) ₹ 15000 (b) ₹ 16000 (c) ₹ 18000 (d) ₹ 25000

Answer 1

(b) ₹ 16000

Because,

Let original salary of man be ₹ x

Increases salary him = 25%

The value increased = 25% of ₹ x

= (25/100) × x

= (25x/100)

= (x/4)

Salary after increment = (x + (x/4))

= (4x + x)/4

= (5x/4)

His increased salary = ₹ 20000

= (5x/4) = 20000

= x = (20000 × 4) / 5

= x = 4000 × 4

= x = ₹ 16000

Answer 2

Let salary of the man=X

Increase in salary=25%

=>increase in salary=X/4

Salary becomes=X+X/4=5X/4

=>5X/4=20000

=>X=16000 (ans)