11. Criticize the following statement and write a correct version.
Cadmium chloride is a nasty chemical… used as a coating for thin-film solar cells because it increases the efficiency of converting sunlight to energy…. [In tests] magnesium chloride … yielded comparable efficiency…. Magnesium chloride is also nontoxic, abundant and costs about 300 times less than cadmium chloride.
—Scientific American 311(3) (September 2014): 20
11.
The writer uses both multiplicative and subtractive language together. Better: “ … one three-hundredth as much as….”