Question

the ages of sonal and manoj are in ratio 7 : 5 ten year hence, the ratio of their ages will be 9 : 7 find the present age is​

Answer 1

Step-by-step explanation:

Ages of Sonal and Manoj = 7:5

Ages after 10 years = 9:7

Let their present ages be 7x and 5x and their future ages be 9x and 7x

ATQ =>( 7x + 10 ) / ( 5x+10 ) = 9x / 7x

=> ( 45x + 90 ) / ( 49x + 70 )

=> 49x - 45x = 90 - 70

=> 4x = 20

=> x = 20/4

=> x = 5

present ages will be 35 and 25

Answer 2

Step-by-step explanation:

Let the present ages of Sonal and Manoj be 7x yrs and 5x yrs respectively.

According to question,

7x+10/5x+10=9/7

or 7(7x+10)=9(5x+10)

or 49x+70=45x+90

or 49x-45x=90-70

or 4x=20

or x=20/4

or x=5

Present age of Sonal=(5×7)yrs=35yrs

Present age of Manoj=(5×5)yrs=25yrs