Answer:
Bob = 34, father = 59, son = 7
Step-by-step explanation:
Use a system of equations:
Bob = x
Father = x + 25
Son = x - 27
Add them all together, set equal to 100 and solve:
x + x + 25 + x -27 = 100
3x - 2 = 100
3x = 102
x = 34 (bob)
Then plug x back into the equations to solve for father and son age:
34 + 25 = 59 (father)
34 - 27 = 7 (son)
Then you can check your work by adding 34+59+7 and you get 100.
Answer:
Bob son is 7 years
Father's age is 59 years
Bob is 34 years
Step-by-step explanation:
Bob age be x
Father age be y
Son's age be w
Bob is younger means father is older;
y = 25+x ; x = y -25
x = 27 + w
y-25 = 27+w
y = 27+25+w = 52 +w
x + y + w = 100
27+w + 52+w +w = 100
79+3w = 100
3w = 100-79 = 21
w = 21/3 = 7 years
y = 52+w = 52+7 = 59 years
x = 27 + w = 27 +7 = 34 years
