Five combine harvesters harvest wheat in 12 days. How much will the harvest time be shortened when six combine harvesters enter the field?

Correct answer:

x =  2

Step-by-step explanation:

d1=12 d n1=5 n2=6  d1 n1 = d2 n2  d2=d1 n2n1=12 65=612 5=660=10 d  x=d1d2=1210=2

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