Raman's present age is three times his daughter's and
nine-thirteenth of his mother's present age. The sum of
the present ages of all three of them is 125 years. What is
the difference between the present ages of Raman's
daughter and Raman's mother?

Question

Raman's present age is three times his daughter's and 
nine-thirteenth of his mother's present age. The sum of 
the present ages of all three of them is 125 years. What is 
the difference between the present ages of Raman's 
daughter and Raman's mother?

anonymous · Answer

Kamya purchased an item for 746,000 and sold it at a 
loss of 12 per cent. With that amount she purchased 
another item and sold it at a gain of 12 per cent. What 
was her overall gain/loss?

mertsj · Answer

r = raman
d=daughter
m=mother
r = 3d, so d = 1/3r
r=9/13m so m = 13/9r
r+1/3r+13/9r=125
Multiply by 9 and solve