Question

The ratio ages of monu and sonu is 5:7 four years later the rstio of their ages will bevthree 3:4 find theirvpresentvages

Answer 1

Ratio of ages=5:7
Let the common multiple be 'x'
therefore, Monu's age=5x years
Sonu's age=7x years.
By data,
$\frac{5x + 4}{7x + 4} = \frac{3}{4}$
4(5x+4)=3(7x+4)....Cross multiplying.
20x+16=21x+12
21x-20x=16-12
x=4
Sonu's age=5x=5×4=20 years
Monu's age=7x=7×4=28 years.