Answer:
113/2 is 56.5, 56.5-15 is 41.5
about 41 to 42
Gabrielle is 15 years older than Mikhail. The sum of their ages is 113. What is Mikhail's age?
G + M = 113
substitute in for G: (M + 15)
(M + 15) + M = 113
2M + 15 = 113
2M = 98
M = 49 years old
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