Workers

Ten workers must pave the road for 22 working days. After four days were spent speeding up work, two more workers were added.

a) After how many work days do workers complete the paved road?
b) How many working days does a total paved road take?

Correct answer:

a =  15
b =  19

Step-by-step explanation:


4/22 + a·12/(10·22) = 1
b = a + 4

1.2a = 18
a-b = -4

Row 2 - 1/1.2 · Row 1 → Row 2
1.2a = 18
-b = -19


b = -19/-1 = 19
a = 18/1.2 = 15

a = 15
b = 19

Our linear equations calculator calculates it.



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