Question

1.
If 5A : 6B is the duplicate ratio of 5A-C:6B-C then:
(a) C2 = 6AB
(b) c2 = 30AB
(c) 2C = 3AB
(d) None of these​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

B) C^2=3AB

Step-by-step explanation:

5A/6B= (5A-C)^2/(6B-C)^2

After applying (a-b)^2 and cross multiplication we get

36*5AB^2+5AC^2-60ABC=25*6A^2B+6BC^2-60ABC

36*5AB^2+5AC^2 = 25*6A^2B+6BC^2

6BC^2-5AC^2 = 36*5AB^2-25*6A^2B

C^2(6B-5A) = 30AB(6B-5A)

C^2 = 30AB