Measured 4046

Peter cut the two bars into equal parts but made them as large as possible. One rod measured 42 cm, the other 63 cm. How many cuts did he have to make?

Correct answer:

n =  3

Step-by-step explanation:

42=237 63=327 GCD(42,63)=37=21  l=GCD(42,63)=21 n=42/l+63/l2=42/21+63/212=3

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