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Sagot :
Carol is 10 years old right now because her brother is 2 and in two years her brother is 4 and she is 12 which three times her brothers age.
Present ages:
Let brother's age be x
Carol's age is 5x
Ages in two years:
Brother's age: x + 2
Carol's age: 5x + 2
In two years, Carol;s age is 3 times his brother's:
5x + 2 = 3 (x+2)
5x + 2 = 3x + 6
5x - 3x = 6 - 2
2x = 4
2x/2 = 4/2
x = 2
Carol's brother: x = 2 ⇒ 2 years old
Carol: 5x = 5(2) = 10 ⇒ 10 years old
In two years:
Brother: 2 + 2 = 4 years old
Carol" 10 + 2 = 12 years old (three times the age of his brother, 4 years)
At present, Carol is 10 years old, which is five times his brother's age, 2.
Final Answer: Carol is now 10 years old.
Let brother's age be x
Carol's age is 5x
Ages in two years:
Brother's age: x + 2
Carol's age: 5x + 2
In two years, Carol;s age is 3 times his brother's:
5x + 2 = 3 (x+2)
5x + 2 = 3x + 6
5x - 3x = 6 - 2
2x = 4
2x/2 = 4/2
x = 2
Carol's brother: x = 2 ⇒ 2 years old
Carol: 5x = 5(2) = 10 ⇒ 10 years old
In two years:
Brother: 2 + 2 = 4 years old
Carol" 10 + 2 = 12 years old (three times the age of his brother, 4 years)
At present, Carol is 10 years old, which is five times his brother's age, 2.
Final Answer: Carol is now 10 years old.
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