Mathematics

Regina Weaver

28 July, 13:04

John is twice as old as Mary. The sum of their ages is 52. How old is Mary?

If J = John's age and M = Mary's age, which system of equations could be used to solve the problem?

2J = M and J + M = 52

J = 2M and J + M = 52

J = 2M and JM = 52

+5

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