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In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is?

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In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is?

(a) 3.0 ns

(b) 68.0 ns

(c) 68.5 ns

(d) 78.5 ns

The question was asked during an interview.

My question is based upon Memory Management in portion Memory Management of Operating System

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The correct option is (c) 68.5 ns

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