Question

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

Roberta is twice as old as David. In 10 years, Roberta will be 8 less than three times David's present age.
Which description best represents this scenario?
o Ifr represents Roberta's age, and a represents David's age, then r = 2d and r + 10 = 3d - 8.
O Ifr represents Roberta's age, and d represents David's age, then r = 2d and r + 10 = 3(d-8).
O Ifr represents Roberta's age, and d represents David's age, then r = 2d and 7 - 10 = 3d – 8.
o Ifr represents Roberta's age, and d represents David's age, then r = 2d and r- 10 = 3(d - 8).

Answer 1

Explanation:

There are 2 questions in one.

1)

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

• r = j + 20
• r + 4 = 2j

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2)

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

• r = 2d
• r + 10 = 3d - 8

Correct choice is A