A’s age is 50% of B’s age, 60% of C’s age and 70% of D’s age. If the average age of A, B, C and D is 64 years, find A’s age.
1
30 years
2
42 years
3
60 years
4
84 years
A’s age is 50% of B’s age, 60% of C’s age and 70% of D’s age. If the average age of A, B, C and D is 64 years, find A’s age.