1.

5 years ago,nuri was twice as old as sonu.ten years later nuri will be twice as old as sonu.how opd are nuri and sonu?

Answer»

Answer:

\huge{\pink{\boxed{\green{\sf{AGE\:OF\:NURI=50\:years}}}}}

\huge{\pink{\boxed{\green{\sf{AGE\:OF\:SONU=20\:years}}}}}

Step-by-step EXPLANATION:

\huge{\pink{\boxed{\green{\underline{\red{\sf{SOLUTION-}}}}}}}

Let present age of Nuri = x

Present age of sonu = y

According to given information:

\to (x - 5) = 3(y - 5) \\  \to x - 3y =  - 10  -  -  -  -  - (<klux>1</klux>)\\   \\ \to (x + 10) = 2(y + 10) \\  \to x - 2y = 10 -  -  -  -  - (2)

Subtracting eqn (1) from eqn (2)

\to x - 2y - (x  - 3y) = 10 - ( - 10) \\  \to x - 2y - x + 3y = 10 + 10 \\  { \pink{ \boxed{ \green{ \therefore y = 20}}}} \\  \\ substituting \:value \: of \: y \: in \: (1) \\  \to x - 3 \times 20 =  - 10 \\  \to x - 60 =  - 10 \\  \to x =  - 10 + 60 \\  { \pink{ \boxed{ \green{ \therefore x = 50}}}} \\  \\ { \pink{ \boxed{ \green{ \therefore age \: of \: nuri = x= 50years}}}} \\ { \pink{ \boxed{ \green{ \therefore age \: of \: sonu = y = 20years}}}}

_________________________________________



Discussion

No Comment Found

Related InterviewSolutions