Question

Sarah is x years old Thomas is 3 years older than Sarah David is twice as old as Sarah the total of their ages is 51 form an equation in x and solve it to work out Sarah's age​

Answer 1

Sarah is 12 years old

Explanation:

3+x+2x+x=51

3+2x+x+x=51

2x+x+x= 48

If x= 12

3+x(2*12)+12=51

Sarah is 12 years old