Question

FAST PLEASE I AM PANICKING

Answer 1

Answer:

im my opionion i would say 7.875 or 7.9 hours  with thme working together combined thats my estimate dont hate me if its wrong ;|

Step-by-step explanation:

Answer 2

If Bob can do it alone in 14 hours then he can do 1/14 of the job each hour

James can do 1/18 of the job each hour.

let x = time it takes them working together

then

x/14 + x/18 = 1 (this statement says that the number of hours x times Bob's rate and James's rate added will give 1 or the full job

18x + 14x = 252

32x = 252

x = 7.875 hours (time to finish when working together