Question

the age of a and b are in the ratio 5:7 eight years ago Thier ages were in the ratio 7:13 find the their present ages​

Answer 1

Answer:

The age of the a = 5*3 = 15 yrs

The age of the b = 7*3 = 21 yrs.  

Step-by-step explanation:

Let the present age of the a be 5x and the b be 7x.

Now,

there ages 8 yrs ago = (5x-8) / (7x-8) = 7/13

65x - 104 = 49x - 56

16x = 48

x=3

The age of the a = 5*3 = 15 yrs

The age of the b = 7*3 = 21 yrs.  

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