Question

The ratio of the percentage of viju to that of aju is 7:2 four years from now, the ratio of the ages of viju to aju will be 5:2 what was viju's age 6years ago ?ya 5:2 what was​

Answer 1

Explanation:

Let Viju's present age be 7x and Aju's age be 2x.

After four years,

Viju's age will be 7x + 4, and

Aju's age will be 2x + 4.

However, it is already given that four years later, their ages will be in the ratio 5:2.

Therefore, we can form the following equation:

$\mathsf{\frac{7x+4}{2x+4}=\frac{5}{2}}$

$\mathsf{==>2(7x+4)=5(2x+4)}$

$\mathsf{==>14x+8= 10x+20}$

$\mathsf{==>14x-10x=20-8}$

$\mathsf{==>4x=12}$

∴ $\mathsf{x=\frac{12}{4}=3}$

Hence,

$\mathsf{Viju's\:present\:age=7\times3=21\:years}$

∴ $\mathsf{Viju's\:age\:6\:years\:ago=15\:years}$

$\mathsf{Aju's\:present\:age=2\times3=6\:years}$

∴ $\mathsf{Aju's\:age\:6\:years\:ago=0\:years,\:meaning\:he\:was\:newborn\:then.}$

Answer: 15 and 0

I hope this answer helps. :D