Answer:
a) 1/3 of a clean room
Step-by-step explanation:
First at all, we need to calculate how much takes Jacob cleaning a room.
So we divide 1 hour by 2 rooms
1 hour = 60 min
and [tex]\frac{60min}{2 rooms} = 30 min/room[/tex]
Now, we must to know how much takes William to cook a meal:
In 60 minutes William cooks 9 meals
so we have:
[tex]\frac{60min}(9 meals} = 6 \frac{2}{3} minutes/meal \\[/tex]
that means William spends 6 minutes and 40 sec cooking a meal.\
Now we can solve:
In 6 minutes and 40 sec, how many rooms can Jacob clean?
We know Jacob spend 30 minutes cleaning a room so in 10 minutes or 1/3 of a clean room Williams had already cooked another meal. Thus, the closest answer is a)1/3 of a clean room.
