If A : B : C = 2 : 3 : 5 and C : D = 2 : 5, then what is A : D?
Given =Â A : B : C = 2 : 3 : 5 -------------(i)
and C : D = 2 : 5 ----------(ii)
'C' is common in both, thus we need to make it equal in both. Multiply equation (i) by 2 and equation (ii) by 5
=> $$A:B:C=4:6:10$$
and $$C:D=10:25$$
$$\therefore$$ $$A:D=4:25$$
=> Ans - (A)
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