SOLUTION: If Melanie can complete 6 forms in 15 minutes, how long will it take her to complete 30 forms? (A) 12 minutes (B) 60 minutes (C) 75 minutes (D) 120 minutes I tried to do cr

Algebra ->  Rate-of-work-word-problems -> SOLUTION: If Melanie can complete 6 forms in 15 minutes, how long will it take her to complete 30 forms? (A) 12 minutes (B) 60 minutes (C) 75 minutes (D) 120 minutes I tried to do cr      Log On


   



Question 319439: If Melanie can complete 6 forms in 15 minutes, how long will it take her
to complete 30 forms?
(A) 12 minutes
(B) 60 minutes
(C) 75 minutes
(D) 120 minutes
I tried to do cross multiplying. I got was 12 minutes. But the key say it was 75 minutes.

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Her rate is 6%2F15 forms/min
30 forms = 6%2F15 forms/min x t min
t+=+30%2F%286%2F15%29
t+=+%2815%2A30%29%2F6
t+=++75 min