Larry can clear his driveway of a foot of snow in 1 hour and 45 minutes, and donald can complete the same job in 1 hour and 10 minutes. about how long will it take them together to clear the driveway?

We are given

Larry can clear his driveway of a foot of snow in 1 hour and 45 minutes

we know that

1 hour =60 min

so, Larry can clear his driveway of a foot of snow in 60+45=105 min

So, in 1 min , Larry can do

Donald can complete the same job in 1 hour and 10 minutes.

we know that

1 hour =60 min

so, Donald can complete the same job in  60+10=70 min

So, in 1 min , Donald can do

Total work by them in 1 min is

So, time taken by them when they work together is

............Answer

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3