Lời Giải
Lời Giải
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Translate the problem into an equation:
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Nicky is 3 times as old as her daughter Casey. The sum of their ages is 48 years.:Find the age of each.The chu vi of a circle is 13pi m. What is the area, in square meters? Express your answer in terms ofthrice the number x less than 5Two years ago, a father was four times older than his son. In twelve years’ time, he will be twice as old as his son. Find the ages of both the father and his son.two thirds of a number increased by seven