Question

Use equations to solve the following questions

David is 5 years younger than his twin brothers. If the sum of their ages is 52, then
how old is David?

Answer 1

Let the age of each twin brother = x years
(x-5) + 2x = 52
3x - 5 = 52
3x = 57
x = 57/3

Answer 2

Can you finish the rest have got the age of each twin?

Answer 3

Let the age of David be x.
Then the age of one of his twin brothers=x+5 and that will be the age of the othr too.
then x+x+5+x+5=52
3x+10=52
3x=52-10
3x=42
x=42/3
x=14

Answer 4

David must be x.
Then the age of one of his twin brothers=x+5 and that will be the age of the othr too.
then x+x+5+x+5=52
3x+10=52
3x=52-10
3x=42
x=42/3
x=14