Acompany has two types of machines, type r and type s. operating at a constant rate, a machine of type r does a certain job in 36 hrs and a machine of type s does the same job in 18 hours. if the company used the same number of each type of machine to do the job in 2 hours, how many machines of type r were used? a. 3b. 4c. 6d. 9e. 12

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

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step-by-step explanation: