Tractors

Wheel and belt tractors each day plow 8 ha of fields. The wheel tractors would have to work to plow 76 hectares for 12 days. Eight days with the belt tractor together. How many hectares do each day of each tractor?

Correct answer:

a =  3
b =  5

Step-by-step explanation:


76 = 12a + 8b
8 = a+b

76 = 12·a + 8·b
8 = a+b

12a+8b = 76
a+b = 8

Row 2 - 1/12 · Row 1 → Row 2
12a+8b = 76
0.33b = 1.67


b = 1.66666667/0.33333333 = 5
a = 76-8b/12 = 76-8 · 5/12 = 3

a = 3
b = 5

Our linear equations calculator calculates it.



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you have a system of equations and looking for calculator system of linear equations?

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Themes, topics:

Grade of the word problem:

Related math problems and questions: