Highway repair

The highway repair was planned for 15 days. However, it was reduced by 30%. How many days did the repair of the highway last?

Result

t =  10.5 d

Solution:

t=15 (130/100)=212=10.5=10.5  d t = 15 \cdot \ (1-30/100) = \dfrac{ 21 }{ 2 } = 10.5 = 10.5 \ \text{ d }



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