Lời Giải
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The sum of Naruto’s and Sasuke’s ages is 18. In three years, Naruto will be twice as old as Sasuke. What are their ages now?Kehinde is 20 years younger than Pavati. Five years ago, Pavati's age was 2 times Kehinde's age. How old is Kehinde now?Two years ago, Xenon was three times as old as her nephew was then. In five years, Xenon will be only two times as old as her nephew. How old is each?The sum of two number is 25. Twice the bigger number is three times the smaller number. What is the bigger number?Four times a number is equal to twice its square. What is the number?