A, B and C divide an amount of ₹10,500 amongst themselves in the ratio 5 : 7 : 9, respectively. If each one gets ₹500 more, then what will be the ratio of the amounts with A, B and C?

3 : 4 : 5

 A  :  B  :  C 

 5  :  7  :  9   ⇒ 21R = 10500

                           R = 500

A's share = 5 x 500 = 2500

B's share = 7 x 500 = 3500

C's share = 9 x 500 = 4500                          

Now, each gets ₹500 more

then, 

 A     :   B    :   C

3000 : 4000 : 5000

 3     :   4    :   5