Problema Solution
Fred is 4 years older than Barney. five years ago the sum of their ages is 48. How old are they now.
Answer provided by our tutors
F = B+4
(F-5)+(B-5) = 48 Substitute F = B+4
(B+4-5)+(b-5) = 48 Simplify.
2B-6 = 48 Add 6 to both sides.
2B = 54 Divide both sides by 2.
B = 27 and...
F = B+4
F = 27+4
F = 31