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15.) Roger can do the project in x number hours. Conception can do the same job in 2 hours less than Roger does. Which of the choices below is the difference of their rate?​

15 Roger Can Do The Project In X Number Hours Conception Can Do The Same Job In 2 Hours Less Than Roger Does Which Of The Choices Below Is The Difference Of The class=

Sagot :

Answer: 2

correct me if I'm wrong :))

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Answer:

A. 2x-2/x²-2x

Step-by-step explanation:

Let roger be 1/x and conception 1/(x-2)

> 1/x/1/x-2

> 1(x-2)/x(x-2)/1(x)/(x-2)x

> x-2/x²-2x/x/x²-2x

> 2x-2/x²-2x