Answer:
Step-by-step e
xplanation:
Let s represent Sammy's age. Then we have the relations ...
Mrs Bartley's age: 6s
Mr Bartley's age: 7s
Arrow's age: s+3
Total of all ages is ...
(s) + (s+3) + (6s) +(7s) = 93
15s = 90 . . . . subtract 3
s = 6 . . . . . . . divide by 15
So, the ages are ...
Sammy is 6; Arrow is 9; Mrs. Bartley is 36; Mr. Bartley is 42.