missvu15
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Mary is twice as old as jean and seven years older than hazel. The sum of their ages is 53. How old is each person?

Respuesta :

Answer:

Step-by-step explanation:

M = 2J

M = H + 7

M + J + H = 53

Then combine first two equations and solve in terms of J:

2J = H + 7 --> H = 2J - 7

Substitute for H & M in last equation:

2J + J + 2J - 7 = 53

5J - 7 = 53

5J = 60

J = 12

Then plug J into other equations:

M = 24

J =12

H = 17

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