If the first gardener can finish the job in 6 hours, it means that every hour he completes 1/6 of the job.
By the same logic, the second gardener completes 1/7 of the job per hour.
So, if they work together, they complete

of the job per hour.
So, after 42/13 of a hour, they'll complete the job. Since one hour is made of 60 minutes, 42/13 of a hour is

So, it will take them about 194 minutes to finish the job, i.e. about 3 hours and 14 minutes.
The area of a triangle is 1/2*base*height
If h=8, b=15, then we have 1/2*8*15 which is 1/2*120 which is 60
So the right choice is B
Hope this helped!
Answer:

Step-by-step explanation:

Answer:
B is the answer
Step-by-step explanation:
The answer to that question so D because 1.0 is the lowest tem.