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人気のある >

5 years ago, Nina was twice as old as Sam. In five years, she will be 1.5 times as old as Sam. How old are Sam and Nina now?

解

5 years ago, Nina was twice as old as Sam. In five years, she will be 1.5 times as old as Sam. How old are Sam and Nina now?

解

Nina^{'} s age is : 25

Sam^{'} s age is : 15

解答ステップ

Translate the problem into an equation:

x - 5 = 2 (y - 5), x + 5 = 1.5 (y + 5)

x - 5 = 2 (y - 5), x + 5 = 1.5 (y + 5) : x = 25, y = 15

Nina^{'} s age is : 25

Sam^{'} s age is : 15

人気の例

Landon’s age is 3 years less than 3 times his brother’s age. Landon’s age is 9 minus his brother’s age. How old is Landon Michael is 2 years older than Brandon. Seventeen years ago, Michael was 4 times as old as Brandon.Jonathan is now three times as old as his son.twelve years ago he was six times as old as his son. Find the present ages of each Jonathan is now three times as old as his son is. Twelve years ago he was six times as old as his son was. Find the present ages.Melanie walked for 2.5 hours at a speed of 3.2 miles per hour. How far did Melanie walk?