The ratio of present ages of P and Q is 3:8 and after 6 years their ages ratio is 4:9 then the age of P at present is …………….. years.

Correct option is (A) x = 4y Given that age of x is 4 times of the age of y. \(\therefore\) x = 4y will represent the information.

B) Both ‘a’ & ‘b’ are true, ‘b’ doesn’t explain ‘a’

C) (x + 5) years

Correct option is  B) 15 years

Correct option is (D) none Let Ramu's present age be x years. \(\therefore\) Ramu's age before 4 years = (x - 4) years Ramu's age after 12 years = (x + 12) years \(\therefore\) x+12 = 3(x-4) \(\Rightarrow\) x+12...

Let the age of the younger sister be x and elder sister be x + 4, Age of younger sister 5 years ago = (x - 5) Age of elder system...

Let the present age of Shikha be ‘a’ years.  Given, product of Shikha’s age five years ago and her age 8 years later is 30  ⇒ (a – 5)(a + 8) =...

Let the present ages of the younger sister be ‘a’.  Given, girl is twice as old as her sister.  Age of elder sister = 2a  Also, four years ago, the product of their...