Answer:false
Step-by-step explanation:
3 ways because 12 divided by 4 is 3.
Answer: C. 6
Step-by-step explanation:
Given : Time taken by Machine R to do the job = 36 hours
Time taken by Machine S to do the job = 18 hours
Let x be the number of each type of machine to do the job.
Then , according to the question the required equation will be :-

Hence, the number of machines of type R were used =6
Answer:
9, 40, and 42
Step-by-step explanation:
Answer:
x = 9
Step-by-step explanation:
4x + 7 = 43
4x = 36
x = 9