Find andrews age Their mother age The sum of the ages of the four member in the family is 138 i)Write Down equation in x Solve the equation in (i) to find the v

abigail = x
andrew = x + 11
mother = 3x
father = 2 (x+11) = 2x + 22

a.i. andrew's age = x + 11
a.ii. mother's age = 3x

b.i.  x + x + 11 + 3x + 2x + 22 = 138
b.ii. x + x + 11 + 3x + 2x + 22 = 138
       7x + 33 = 138
       7x = 138 - 33
       7x = 105
         x = 105/7
         x = 15
b.iii father = 2.15 + 22 = 30 + 22 = 52
       andrew = x + 11 = 15 + 11 = 26
       the father's age when andrew was born = 52-26 = 26