How do you convert 35 parts per thousand to percent?

-- take the number of parts per thousand -- multiply it by 1,000 -- the answer is the number of parts per million

Parts per million is a fraction with denominator 1,000,000. For example 5 parts per million means 5/1,000,000. Percent is a fraction with denominator 100. For example, 5 percent is 5/100. So your...

Because the proportion of dissolved substances in seawater is such a small number, oceanographers typically express salinity in parts per thousand.

Equation = (x/y)*1000 example : If 5000(x) out of 10000(y) are suitable for selection we can say = 500 per thousand are eligible. since (5000/10000)*1000 = 500. I'm writing this as i understood ....

3500.