Question

the age of A and B in ratio 3 : 4. after 5 years this ratio became 4/6. find the Present age of A and B.​

Answer 1

Answer:

$\frac{3x + 5}{4x + 5} = \frac{4}{6 } \\ 6(3x + 5) = 4(4x + 5) \\ 18x + 30 = 16x + 20 \\ 18x - 16x = 20 - 30 \\ 2x = - 10 \\ x = \frac{ - 10}{2} \\ x = - 5$

present age of A=3x= 3×-5=-15

present age of A=4x= 4×-5=-20