sachin is younger than rahul by 7 years . if the ratio of their ages is 6 : 9 , find the age of sachin
"explanation : if rahul age is x , then sachin age is x - 7 , so , 9 x - 63 = 6 x 3 x = 63 x = 21 so sachin age is 21 - 7 = 14 answer : b ) 14"
multiply(divide(7, subtract(9, 6)), 6)