Question

My age is 3 times that of my son's age.
The sum of 5 times x, 3 times y and 7 is
3 times the difference of x and y.
The product of z and n is less than its sum.
The product of x and n is less than its sum.​

Answer 1

Answer:

Important Statements and Equations for "Problems based on Ages":

If the present age is y, then n times the present age = ny.

If the present age is x, then age n years later/hence = x + n.

If the present age is x, then age n years ago = x – n.

The ages in a ratio a: b will be ax and bx.