Lời Giải
Chris is 19 years older than Shelley. Five years ago, the sum of their ages was 129. How old are they now?
Lời Giải
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Six times the sum of a number and 15 is-42Three years ago, Tina was three times as old as George. Now, Tina is twice as old as George. How old are Tina and George currently?what number is 15% of 60Five times the sum of a number and 4 is-15The sum of three times a first number and twice a second number is 42 . If the second number is subtracted from twice the first number, the result is 14 . Find the first number.