When 55 is subtracted from a number, it reduces to its 80%. Find four-fifth of the original number.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 220
Let's assume the number is x.
ATQ,
x - 55 = x × 80/100
x - 55 = 4x/5
5x - 275 = 4x
x = 275
So, the 4/5 of the number = 275 × (4/5) = 220