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:
<h2>7</h2>
Step-by-step explanation:
here 7×7 = 49
So the square root of 49 is 7.
Hope it helps you!!
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Answer:
it 68.9
Step-by-step explanation:
because u add all that
Answer:
The newspaper has 1750 readers.
Step-by-step explanation:
Divide 70 by 2: 35.
Then, multiply 35 by 50 which is equal to 1750.
One board is 31.5 inches long. all the boards together is 157.5 inches long