CUET Preparation Today
If 36 : 81 :: X : 63, what is the value of X? |
30 31 28 29 |
28 |
In proportion: a : b :: c : d ⇒ Product of outer values = Product of inner values. Therefore, a × d = b × c Now, ATQ ⇒ 36 : 81 :: X : 63 ⇒ 36 × 63 = 81 × X ⇒ X = \(\frac{36\; \times\; 63}{81}\) = 28 |
