Is it acceptable to say “higher than” when you mean “as high as”?
Consider the following sentence: “Last year, the rent was $500, but now it’s risen to $1,000. The rent is two times higher than it used to be.”
To me, this sentence is misleading, since “two times higher” would mean starting with a value of $500 and duplicating it, twice (in other words, $500 + $500 x 2 = $1,500). It seems the correct sentence should read:
“The rent is two times as high as used to be.”
Are both forms acceptable? Unfortunately, it seems that the more confusing form (”two times higher”) has become more common.