Problema Solution
The ages of ravi and heena are in the ratio 5:7 four years later their ages will be in the ratio 3:4 find their ages
Answer provided by our tutors
Let
x = the present age of Ravi
y = the present age of Heena
x : y = 5 : 7 cross-multiply
5y = 7x
(x + 4) : (y + 4) = 3 : 4 cross-multiply
4(x + 4) = 3(y + 4)
We have the following system of equations:
5y = 7x
4(x + 4) = 3(y + 4)
........
click here to see the system of equations solved for x and y
........
x = 20 years
y = 28 years
Ravi is 20 years old.
Heena is 28 years old.