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人気のある Word Problems >

Noy is twice as old as Kris. In eight years, Noy will be 4years older than Kris. Find their present ages.

解

N oy i s tw i ce a s o l d a s Kr i s . I n e i g h t ye a rs, N oy w i ll b e 4 ye a rs o l d er t han Kr i s . F in d t h e i r p rese n t a g es .

解

Kris^{'} s age is : 4

Noy^{'} s age is : 8

解答ステップ

Translate the problem into an equation:

2 x + 8 - 4 = x + 8

x

を解く

2 x + 8 - 4 = x + 8 : x = 4

発見する age

Kris^{'} s age is : 4

Noy^{'} s age is : 8

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