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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

A farming field can be ploughed by 6 tractors in 4 days. When 6 tractors work together, each of them ploughs 120 hectares a day. If two of the tractors

were moved to another field, then the remaining 4 tractors could plough the same field in 5 days. How many hectares a day would one tractor plough then

Solution:
If each of 6 tractors ploughed 120 hectares a day and they finished the work would be finished in 4 days, then the whole field is:
120 x 6 x 4= 720
720 x 4=2880 hectares. Let's suppose that each of the four tractors ploughed x hectares a day. Therefore in 5 days they ploughed
5 x 4 x x=20 x x hectares, which equals the area of the whole field, 2880 hectares.
So, we get 20x=2880
x=2880 over 20 =144
. Hence, each of the four tractors would plough 144 hectares a day.