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anygoal [31]
2 years ago
6

On a two question true or false quiz what is the probability of guessing both answer answer correctly

Mathematics
1 answer:
algol132 years ago
6 0
25% chance of guessing each question correctly

50% chance to guess one correctly
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The school librarian, Mr. Marker, knows the library has 1,400 books but wants to reorganize how the books are displayed on the s
kipiarov [429]

Answer:

200 resource books

800 fiction books

400 nonfiction books

Step-by-step explanation:

Let's define x as the amount of resource books that are in the library. As he has four times as many fiction books as resource books, that means he has 4*x fiction books.

We also know he has half as many nonfiction books as fiction books, that is 1/2*4*x = 2*x nonfiction books.

We just need to find out the value of x.

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x + 4x + 2x = 1,400

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Therefore, there are 200 resource books, 800 fiction books and 400 nonfiction books in the library.

The tape diagram is attached as an image.

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