Question

please solve this equation.. with explains​

Answer 1

Answer:

28 years

Step-by-step explanation:

(Mother+Father+Son/3)=42==>M+F+S=42*3

After 6 years

Average age of family=36 ==>M+F+S+D+GS=36*5

age of grand son=2

From first equation in second eqn+18 (6 for each of them)

42*3+D+18+2=36*5

126+D+18+2=180

D=180-126-2-18

D=180-128-18

D=180-146

D=34

At the time of marriage D's age is =34-6=28

Answer 2

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Answer:

28 years

Step-by-step explanation:

(Mother+Father+Son/3)=42==>M+F+S=42*3

After 6 years

Average age of family=36 ==>M+F+S+D+GS=36*5

age of grand son=2

From first equation in second eqn+18 (6 for each of them)

42*3+D+18+2=36*5

126+D+18+2=180

D=180-126-2-18

D=180-128-18

D=180-146

D=34

At the time of marriage D's age is =34-6=28