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人気のある Word Problems >

The sum of the ages of Josiah and Lynda is 117 years. 11 years ago, Josiah's age was 4 times Lynda's age. How old is Josiah now?

解

T h e s u m o f t h e a g es o f J os iah an d L y n d a i s 117 ye a rs . 11 ye a rs a g o, J os ia h^{'} s a g e w a s 4 t im es L y n d a^{'} s a g e . Ho w o l d i s J os iah n o w ?

解

Josiah^{'} s age is : 87

解答ステップ

Translate the problem into an equation:

x - 11 = 4 (117 - x - 11)

x

を解く

x - 11 = 4 (117 - x - 11) : x = 87

Josiah^{'} s age is : 87

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