20% of a number is more than 20% of 620 by 210. The number is:

The correct answer is 1670.

Step-by-Step Explanation:

Let the unknown number be denoted as x.

Step 1: Express the given conditions mathematically.
First, calculate 20% of 620:

20% of 620 = $\frac{20}{100}\times 620=0.20\times 620=124$

Step 2: Set up the equation based on the problem statement.
We are given that 20% of x is more than 20% of 620 by 210.
This can be written as:

20% of x = (20% of 620) + 210

Substitute the calculated value of 20% of 620 into the equation:

$\frac{20}{100}\times x=124+210$

$0.20\times x=334$

Step 3: Solve for x.
To find x, divide 334 by 0.20 (or multiply by 5, since 20% is equal to $\frac{1}{5}$):

$x=\frac{334}{0.20}=334\times 5=1670$

Therefore, the number is 1670.