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At 14:30, a bulldozer finished clearing 252 tons of snow from astreet. If the bulldozer cleared 0.80 ton of snow per min, atwhat time did the bulldozer start clearing the snow? Give youranswer in a 12-hour clock format, such as 9:00.IEnter the answer

Sagot :

Data:

Clear 252 tons of snow

Cleared 0.80 ton of snow per min

Calculate the number of minutes that takes the bulldozer to clear 252 tons of snow:

[tex]252\text{ton}\cdot\frac{1\min}{0.80\text{ton}}=315\min [/tex]

Turn that minutes into hours:

[tex]315\min \cdot\frac{1h}{60\min }=5.25h[/tex]

Then, it takes 5.25 hours (5 hours and a quarter) to clear 252 tons of snow.

The bulldozer finished clearing 252 tons of snow at 14:30, the bulldozer start clearing the snow 5 hours and a quarter before 14:30

The bulldozer start clearing the snow at: 9:15

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