Question

the area of hari and shyam are in the ratio 5 : 7 after four years the ratio of their ages will be 3 : 4 find the age of Hari

Answer 1

Answer:

20 years (Hari)

Step-by-step explanation:

Let the age of hari and shyam be x and y

Construct the equation

⇒$\frac{x}{y} =\frac{5}{7}$

⇒$7x=5y$

⇒$y=\frac{7x}{5}$ (Will be useful later)

Now, after four years, their ages will be (x+4) and (y+4)

⇒$\frac{x+4}{y+4} =\frac{3}{4}$

⇒$3y-4x=4$

Substitute y value

⇒$3(\frac{7x}{5} )-4x=4$

Solving this we get, x=20

HOPE THAT HELPS... :)

(MARK AS BRAINLIEST ANSWER)