9
9
9
9 years
9
Mike is 12. Mary is 4. In 4 years, Mike will be 16 and Mary will be 8. So Mike will be twice as old as she is in four years.
9
12,4...16,8
Mary is 4 years old. [A+]
Twice
Write and solve two simultaneous equations. a = Mary's age b = Mike's age Age now: b = 3a Age in 4 years: b + 4 = 2(a + 4)
mike is 2 years older than david
He has one brother, Mike, who is 2 years younger than him.
Leo must be 18. If Leo is twice as old as martin and three times older than mike and the sum of the ages is 33, then martin would be 9 and mike would be 6, making Leo 18.
Twice Once in 1989 and 2nd time in 1996