Problema Solution
Bob's age is 4 times greater than Susanne's age. Dakota is three years younger than Susanne. The sum of Bob's, Susanne's, and Dakota's ages is 93. What is Susanne's age?
Answer provided by our tutors
let
b = Bob's age
s = Susanne's age
d = Dakota's age
Bob's age is 4 times greater than Susanne's age:
b = 4s
Dakota is three years younger than Susanne:
d = s - 3
The sum of Bob's, Susanne's, and Dakota's ages is 93:
b + s + d = 93
by solving the system of equations:
b = 4s
d = s - 3
b + s + d = 93
we find:
b = 64 years
s = 16 years
d = 13 years
click here to see the step by step solution of the system of equations:
Susanne is 16 years.