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sweet-ann [11.9K]
2 years ago
14

Roberta is 20 years older than Julian. In 4 years, Roberta's age will be twice Julian's age.

Mathematics
1 answer:
mars1129 [50]2 years ago
8 0

Step-by-step explanation:

There are 2 questions in one.

1)

<u>Roberta is 20 years older than Julian. In 4 years, Roberta's age will be twice Julian's age:</u>

  • r = j + 20
  • r + 4 = 2j

---------------------------

2)

<u>Roberta is twice as old as David. In 10 years, Roberta will be 8 less than three times David's present age:</u>

  • r = 2d
  • r + 10 = 3d - 8

Correct choice is A

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