It takes Jim \(N\) minutes to prepare one omelet. It takes Cole \(N/2\) minutes to prepare one omelet. It takes Mitch

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It takes Jim \(N\) minutes to prepare one omelet. It takes Cole \(N/2\) minutes to prepare one omelet. It takes Mitch \(N/2\) minutes to prepare \(2\) omelets. If Jim, Cole and Mitch together prepare a total of \(30\) omelets in \(40\) minutes, then how many minutes would it take Mitch alone to prepare \(30\) omelets?

A. \(70\)
B. \(120\)
C. \(140\)
D. \(160\)
E. \(280\)

The OA is A
Source: — Problem Solving |