Answer:

We have, 42% × x = 210

or,

42

100

× x = 210

Multiplying both sides by 100 and dividing both sides by 42,

we have x = 210 ×

100

42

x = 500

If you are using a calculator, simply enter 210×100÷42, which will give you the answer.

Step-by-step explanation:

I hope its help.