Answer:
10 hours 55 minutes
Explanation:
Saida and meike lose $30 and Tom must earn $30 by working for $2.75 dollars an hour. Let x be the number of ours Tom must work. We can write an equation for the total amount of moeny Tom will make working x amount of hours:

We solve for x:


Therefore he must work 10 hours and 55 minutes (91% of an hour) to earn $30.