Peter 67584

Peter was twice as old as Pavel. 4 years ago, Petr was three times older than Pavel. How old are they now?

Correct answer:

a =  16
b =  8

Step-by-step explanation:

a=2 b a4=3 (b4)  a2b=0 a3b=8  Row2Row1Row2 a2b=0 b=8  b=18=8 a=0+2b=0+2 8=16  a=16 b=8

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