A and B are friends and their ages differ by 4 years, A being the elder. A’s father D, is twice as old as A, and B is twice as old as his sister C. The age of D and and C differ by 38 years. Find the ages of A and B.
Question
Question
A and B are friends and their ages differ by 4 years, A being the elder. A’s father D, is twice as old as A, and B is twice as old as his sister C. The age of D and and C differ by 38 years. Find the ages of A and B.
Answer:
Step-by-step explanation:
A = B+4
D = 2A
B = 2C
D-C = 38
2A – B/2 = 38
2(B+4) – B/2 = 38
4B+16 – B = 79
3B = 63
B = 21
A = B+4 = 25