Question

please help me in ratio and proportion . this 21 number

Answer 1

for queries, msg me. also follow me

Answer 2

Let the present age of Mr. Sen be 17x and his son be 9x

Given, before 9 years, age of Mr. Sen and his son are in the ratio 7 : 3


According to the question,

$\dfrac{17x - 9}{9x - 9}$ = $\dfrac{7}{3}$

➾ 3(17x - 9) = 7(9x - 9)

➾ 51x - 27 = 63x - 63

➾ 51x - 63x = -63 + 27

➾ -12x = -36

➾ x = $\dfrac{-36}{-12}$

➾ x = 3



✒ Present age of Mr. Sen => 17x

=> 17 × 3

=> 51 years


✒ Present age of his son => 9x

=> 9 × 3

=> 27 years