According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounts for almost half of the $ 20.8 billion increase in drug spending last year, the remainder of which came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.
1 Explanation
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Anupam Chatterjee
According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.
-- There are two errors in the sentence -
1. increases in the sales of the 50 drugs that were advertised most heavily (accounts)
Increases - plural so verb "accounts" is wrong
2. Verb "accounts" should be accounted..
1 Explanation