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3 years ago

Mary is five times older than Julian. If the sum of their ages is 42, how old is Mary?

Mathematics

2 answers:

Leno4ka [110]3 years ago

5 0

Answer:

Mary is 35.

Step-by-step explanation:

An equation would be 5j + j = 42.

I used substitution by plugging in 7:

5(7) + 7 = 42

35 + 7 = 42

Hope this helps,

♥A.W.E.S.W.A.N.♥

Tanya [424]3 years ago

4 0

Answer:

Step-by-step explanation:

M=5J

J=M/5

42=6J

42/6=7

Jullian is 7

7x5=35

Mary is 35

35+7=42

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