Saved Bookmarks
| 1. |
If \(\frac{a}{b} = \frac{7}{9}, \frac{b}{c} = \frac{3}{5}\) , then the value of a : b : c is1. 7 : 3 : 152. 21 : 27 : 423. 7 : 9 : 154. 7 : 9 : 5 |
|
Answer» Correct Answer - Option 3 : 7 : 9 : 15 Given: \(\frac{a}{b} = \frac{7}{9}, \frac{b}{c} = \frac{3}{5}\) Calculation: a/b = 7/9 Let the value of a be 7x and b be 9x. ⇒ b/c = 3/5 Let the value of b be 3y and c be 5y. We know that value of b will be same. ⇒ 9x = 3y ⇒ x/y = 1/3 Put x = 1 and y = 3 ⇒ a = 7x =7, b = 9x = 9, c = 5y = 15 ∴ The value of a : b : c = 7 : 9 : 15
|
|