Question

There are 4 cups containing 5/7(cup1), % (cup2). 11/12(cup3), 8/9(cup4) of coffee. If using the amount of coffee in cup 4 to fill the other 3 cups, how much will be left to cup 4?

Answer 1

Answer:

answer of 4 cup is 0

this is correct answer

Answer 2

Given: There are 4 cups containing 5/7(cup1), % (cup2). 11/12(cup3), 8/9(cup4) of coffee. If using the amount of coffee in cup 4 to fill the other 3 cups.

To find: The amount of coffee left to cup 4.

Solution:

The 5/7 of the first cup is filled with coffee. This means if the cup is divided into 7 parts, the coffee was filled in five parts out of the seven. So, two parts are left. Similarly, one part is left in cup 2 and one part is left in cup 3.

Now, the total number of parts left empty in three cups must be subtracted from the total number of parts filled with coffee in cup 4. This will give the amount of coffee that is left to cup 4.

$\frac{8}{9} - (\frac{2}{7} + \frac{1}{4} + \frac{1}{12}) = \frac{68}{252}$

                           $= \frac{17}{63}$

Therefore, the amount of coffee left to cup 4 is 17/63.

Although part of your question is missing, you might be referring to this full question:

There are 4 cups containing 5/7 (cup1), 3/4 (cup2), 11/12 (cup3), 8/9 (cup4) of coffee. If using the amount of coffee in cup 4 to fill the other 3 cups, how much will be left to cup 4?