Answer:
I think it's a^2 x c^2 just my most sure guess
Answer:
omggg he looks like a stuffed animal
Answer:
it takes 1st person 4 hour and second person is 8 hours
Step-by-step explanation:
Let t is the time (t >0)
We have:
- 1st person working rate per one task: 1/t-8
- 2nd person working rate per one task: 1/t
- Working rate per one task from 2 person: 1/3
<=> 1/3 = 1/t + 1/t-8
<=>
<=> ![(t-7)^{2} =25](https://tex.z-dn.net/?f=%28t-7%29%5E%7B2%7D%20%3D25)
<=> t - 7 = 5
<=> t = 12
So it takes 1st person 4 hour and second person is 8 hours
mathematically the answer to that is 18 because 10.2 minus 2.4 is equal to the difference of 7.8 and 7.8 plus 10.2 is equal to the sum of exactly and positively 18