Question

What number when increased by 5% becomes 420​

Answer 1

Answer:

That number is x.

Step-by-step explanation:

Let that unknown number be x.

x + (5x / 100) = 420

21x / 20 = 420

21x = 8400

x = 400

Hence solved

Answer 2

Answer:

400

Step-by-step explanation:

Let the number be 'x'

x+5x/100(5% of x)=420

=105x/100=420

x=42000/105

x=400