When 35 is subtracted from a number, it reduced to its

When 35 is subtracted from a number, it reduced to its 80%. What is 4/5th of that number ?

Let the number be N.
Then N - 35 = 80N/100
⇒ N - 4N/5 = 35
⇒ N / 5 = 35
⇒ N = 175

∴ Required number = 175 x (4/5)
= 35 x 4 = 140