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人気のある Word Problems >

Jisoo is 9 years older than her friend, Jennie. Four years ago, she was two times as old as her friend. Find the present age of each.

解

J i soo i s 9 ye a rs o l d er t han h er f r i e n d, J e nni e . F o u r ye a rs a g o, s h e w a s tw o t im es a s o l d a s h er f r i e n d . F in d t h e p rese n t a g e o f e a c h .

解

Jisoo^{'} s age is : 22

Jennie^{'} s age is : 13

解答ステップ

Translate the problem into an equation:

x - 4 = 2 (x - 9 - 4)

x

を解く

x - 4 = 2 (x - 9 - 4) : x = 22

発見する age

Jisoo^{'} s age is : 22

Jennie^{'} s age is : 13

人気の例

Nine years ago, Jareth was five times as old as Dave. Now, he is only three times as old as Dave. Find their present ages.The sum of the ages of a father and son is 56. Four years ago the father was 3 times as old as the son. Find the present age of each.簡約 Nine years ago, Jareth was five times as old as Dave. Now, he is only three times as old as Dave. Find their present ages.Melvin is 18 years older than his daughter, Melly. Eight years ago, he was 7 times as old as his daughter. Find the present age of Melly.Andrei is 6 years older than his sister Andrea. After 10 years, the sum of their ages will be 50. How old is Andrea?