Delhi Police Constable Exam Model Paper 1

A number is increased by $66\frac{2}{3}\%$
Calculation:
$66\frac{2}{3}\%=\frac{2}{3}$
We take original number = 3x, thus if it is increased by $66\frac{2}{3}\%$ , number becomes 3x + 2x = 5x
According to the question
5x = 2255
⇒ x = 451
∴ Original number $=3\mathit{x}=3\times 451=1353$