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受欢迎的 Word Problems >

The sum of eric and ed's age is 74. three years ago, eric was thrice as old as ed. how old are eric and ed now?

解答

T h e s u m o f er i c an d e d^{'} s a g e i s 74. t h ree ye a rs a g o, er i c w a s t h r i ce a s o l d a s e d . h o w o l d a re er i c an d e d n o w ?

解答

Eric^{'} s age is : 54

Ed^{'} s age is : 20

求解步骤

Translate the problem into an equation:

x - 3 = 3 (74 - x - 3)

求解

x, x - 3 = 3 (74 - x - 3) : x = 54

找到 age

Eric^{'} s age is : 54

Ed^{'} s age is : 20

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