Lời Giải
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John is 10 years younger than Ben. In three years Ben will be twice as old as John. How old is Ben now?5 years ago, Nina was twice as old as Sam. In 5 years, she will be 1.5 times as old as Sam. How old are Nina and Sam?Miguel is 46 years old. He is 4 years older than three times his sons age.Find the ge of his son.A mother is currently 10 times older than her son. In 4 years time, she will be 7 times older than her son.A man is 10 times older than his grandson. He is also 54 years older than him. Find their present ages.