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人気のある Word Problems >

A father is 7times as old as his son. Two years ago, the father was 13 times as old asa his son. What are their preaent ages?

解

A f a t h er i s 7 t im es a s o l d a s hi s so n . Tw o ye a rs a g o, t h e f a t h er w a s 13 t im es a s o l d a s a hi s so n . Wha t a re t h e i r p re a e n t a g es ?

解

Boy^{'} s age is : 4

Father^{'} s age is : 28

解答ステップ

Translate the problem into an equation:

7 x - 2 = 13 (x - 2)

x

を解く

7 x - 2 = 13 (x - 2) : x = 4

発見する age

Boy^{'} s age is : 4

Father^{'} s age is : 28

人気の例

Lori is 6 years younger than micah. In 5 years, Lori's age will be 3/4 of Micahs age. How old is lori now?15 years from now Steven will be twice as old as Maria. The current sum of the ages of Steven and Maria is 33. How old is Maria right now?Claire's father is 6 years more than 3 times her age. If her dad is 39 years old, how old is Claire?3 years from now Mike will be 17 years old. The current sum of the ages of Mike and Jennifer is 52. How old is Jennifer right now?5 years from now Steven will be 44 years old. The current sum of the ages of Steven and Mary is 72. How old is Mary right now?