Area and time question

Area and time question

Postby Guest » Mon May 28, 2018 7:39 pm

Hi guys, having trouble with this math question and hoping you could help!

What is the time needed to plough this field with a) the old tractor and b) the new tractor:
- The area of the field is 100 m x 100 m square
- The width that both tractors can plough is 100 cm wide
- The speed is 0.5 hectare per hour for the old mower
- The speed is 1 hectare per hour for the new mower

Can you guys help me with the working out as well as the answer?
Guest
 

Re: Area and time question

Postby Guest » Wed May 30, 2018 1:43 am

100mx100m = 1 hectare

So the new tractror needs 1 hour and the old ones 2 hours.

But I do not know why we need this: "The width that both tractors can plough is 100 cm wide"
Guest
 


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