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人気のある Word Problems >

When Christian and Cynthia were married, Cynthia was 2 years younger than Christian. How old was Christian on his wedding day if 20 years ago he was twice as old as Cynthia?

解

Wh e n C h r i s t ian an d C y n t hia w ere ma rr i e d, C y n t hia w a s 2 ye a rs yo u n g er t han C h r i s t ian . Ho w o l d w a s C h r i s t ian o n hi s w e dd in g d a y i f 20 ye a rs a g o h e w a s tw i ce a s o l d a s C y n t hia ?

解

Christian^{'} s age is : x

解答ステップ

Translate the problem into an equation:

x - 20 = 2 (x - 20)

x

を解く

x - 20 = 2 (x - 20) : x = 20

発見する Christian's age

: x

Christian^{'} s age is : x

人気の例

twice a number, decreased by 14 Find two consecutive whole numbers that sqrt(127) lies between.76 times a number minus 72 is equal to a the number minus-65 Billy eats 1 apple. Before he ate the apple, there were 7 apples. How many apples are there now?In 56 years, Kevin will be 9 times as old as he is right now.:How old is he right now?