Carla needs to complete her science homework. She has 20 pages to read and 14 questions to answer. If it takes Carla 10 minutes to read 4 pages, how many minutes will it take her to read the full assignment?
A. 50 minutes
B. 85 minutes
C. 9 minutes
D. 35 minutes
First find how many groups of 4 pages Carla can read: 20 pages / 4 pages/group = <<20/4=5>>5 groups
Then multiply that number by the time per group to find how long it takes her to read those groups: 5 groups * 10 minutes/group = <<5*10=50>>50 minutes
Then add the time she spends answering questions to find the total time: 50 minutes + 14 questions * 1 minute/question = 50 minutes + <<14*1=14>>14 minutes = <<50+14=64>>64 minutes, which rounds up to 65 minutes. Answer: \boxed{B}.
To find out how long it will take Carla to read the full assignment, we need to calculate the number of pages she can read in one minute and then multiply that by the total number of pages (20).
Given that Carla takes 10 minutes to read 4 pages, we can find out how many minutes it takes her to read 1 page by dividing the number of pages by the number of minutes: 10 minutes / 4 pages = 2.5 minutes per page.
Now, to find out how long it will take Carla to read the full assignment (20 pages), we multiply the number of pages by the time it takes her to read one page: 20 pages * 2.5 minutes per page = 50 minutes.
Therefore, the correct answer is A. 50 minutes.
To find out how long Carla will take to read the full assignment, we need to determine how many sets of 4 pages she can read in 20 pages.
Divide 20 by 4: 20 / 4 = 5 sets of 4 pages.
Since it takes her 10 minutes to read 4 pages, multiply 10 by 5: 10 * 5 = 50 minutes.
Therefore, Carla will take 50 minutes to read the full assignment.
The correct answer is A. 50 minutes.