Ling can type 52 words. 52 words=1 minute 364 words is 40% 728 words is equal to 80% 182 words is 20%. Add the 80% and the 20% to equal 910 words as the full total. Ling has already been typing for 7 minutes, because the 364 divided by 52 is 7. So the 910 total take away the 364 she already typed = 546 words left to type. Ling has already been typing for 7 minutes, because the 364 divided by 52 is 7.
