Question

At its highest salinity, the water in Utah’s Great Salt Lake contains about 14.5g of salt in 50g of lake after. What was the salinity of the lake?

Answer 1

29% . . . or . . . 290‰

Explanation:

The ratio of weight of salt to weight of water was ...

(14.5 g)/(50 g) = 29/100 = 29%

Sometimes, salinity is expressed as "parts per thousand".

29/100 = 290/1000 = 290‰

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Use of the abbreviation "PPT" for "parts per thousand" is not recommended, as that abbreviation has several different interpretations, including "parts per trillion."