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受欢迎的 Word Problems >

Bert is 5 times as old as Ernie. Nine years ago, the sum of their ages was 48. Determine both their ages now.

解答

B er t i s 5 t im es a s o l d a s E r ni e . N in e ye a rs a g o, t h e s u m o f t h e i r a g es w a s 48. De t er min e b o t h t h e i r a g es n o w .

解答

Ernie^{'} s age is : 11

Bert^{'} s age is : 55

求解步骤

Translate the problem into an equation:

5 x - 9 + x - 9 = 48

求解

x, 5 x - 9 + x - 9 = 48 : x = 11

找到 age

Ernie^{'} s age is : 11

Bert^{'} s age is : 55

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