Question

By what
number should 5/7
be divided to get
-15/56?
A-3/3
B 5/6
C 8/3
D
-5/6
E None of these​

Answer 1

The answer of the question is 8/3 brother or sister

Answer 2

Answer:

(E) None of these.

(Cause (C) has 8/3 but since our answer is -8/3 its not d option)

Step-by-step explanation:

Let the unknown no. be 'x'

5/7        -15

-----   =  ------

 x           56

5         -15

----  =   -------

7x         56

1         -3

---   =  -----          (Dividing num by 5 n den by 7)

x         8

∴ 3x = -8

⇒ x = -8/3

Hence, -8/3 should be divided to 5/7 to get -15/56.