Question

Please answer this math question will mark as brainliest:
The ages of Raju and Ravi are in the ratio 3:4 .Four years from now the ratio of their ages will be 4:5 . Find their present ages.

Answer 1

Answer:

step by step explaination:

The ages of Raju and Ravi are in the ratio 3:4 = 3x,4x

Let, the age of Raju=3x

the age of Ravi=4x

After 4 years age of Raju=3x+4

age of Ravi=4x+4

After 4 years ratio of their age=4:5

3x+4:4x+4=4:5

3x+4/4x+4=4/5

cross multiplication:

5(3x+4)=4(4x+4)

15x+20=16x+16

15x-16x=16-20

-1x=-4

both subtraction symbols will cancelled

x=4

therefore,the present age of Raju=3(4)=12yrs

the present age of Ravi=4(4)=16yrs