Question

Sarah is x years old
Thomas is 3yrs older than Sarah
David is twice as old as Sarah
a) Write an expression for Thomas's age in terms of x
b) Write an expression for David's age in terms of x
c) Form an equation in x and solve it to work out Sarah's age​

Answer 1

Answer:

a) 3+x

b) 2x

c) X= 11-3

= X= 8

Answer 2

Answer:

x = 16

Step-by-step explanation:

a. x + 3

b. 2x

c. x + 3 + 2x = 51

   3x = 51 - 3 = 48

   3x = 48

    x = 48/3 = 16

    x - 16