# Mow the lawn

Dano would mow the lawn in 12 hours and Milada in 16 hours. How long will take the lawn mow together?

Correct result:

t =  6.857 h

#### Solution:

$x=1/12+1/16=\dfrac{ 7 }{ 48 } \doteq 0.1458 \ \\ t=1/x=1/0.1458=\dfrac{ 48 }{ 7 }=6.857 \ \text{h}$

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