I don’t know how to do this, it is very difficult

150

Step-by-step explanation:

Because..

We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.

If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

* Therefor the answer would be 150, hopefully this helps:) Mark this the brainliest if this is helpful :)