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The highway department is responsible for 600 kilometres of two-lane roads and 300 kilometres of four-lane roads. What percent of the roads are two-lane? (Hint: Find the total distance of road first!)

 Feb 16, 2020
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600 / [600 + 300] =600 / 900 =2 / 3 of the roads are two-lane.

 Feb 17, 2020

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