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netineya [11]
2 years ago
7

Mark's dad is three times older than Mark. Mark's sister is 2 years younger than Mark. (3m) The sum of their ages is 48. How old

are Mark, his sister, and his dad?
Mathematics
1 answer:
nataly862011 [7]2 years ago
8 0

Answer:

Age of Mark =10 years

Age of Mark's dad =30 years

Age of Mark's sister =8 years

Step-by-step explanation:

Let age of Mark be x years.

Mark's dad is three times older than Mark

Age of her Mark's dad =3x

Mark's sister is 2 years younger than Mark

Age of Mark's sister =(x-2) years

The sum of their ages is 48.

x+3x+x-2=48\\5x-2=48\\5x=50\\x=10

Age of Mark =x=10 years

Age of Mark's dad =3x=3(10)=30 years

Age of Mark's sister =x-2=10-2=8 years

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