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dedylja [7]
3 years ago
12

michelle is 3 times as old as her sister tina. Tina is 4 years younger than michelle. How old is tina now?

Mathematics
1 answer:
Travka [436]3 years ago
3 0

Answer:

Tina's age = 2 years

Step-by-step explanation:

Tina's age = x

Michelle's age = 3 * x = 3x

Tina is 4 years younger than Michelle.

x = 3x - 4

Add 4 to both side

x +4 = 3x

Subtract x from both sides

4 = 3x - x

4 = 2x

Divide both sides by 2

4/2 = x

2 = x

Tina's age = 2 years

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Alvin's age is two times Elga's age. The sum of their ages is 63. What is Elga's age?
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