Q51

An application executes $6.4 \times 10^{8}$ number of instructions in $6.3$ seconds. There are four types of instructions, the details of which are given in the table. The duration of a clock cycle in nanoseconds is __________. (rounded off to one decimal place)

$$\begin{array}{|c|c|c|} \hline \text{Instruction type} & \text{Clock cycles required per} \\& \text{instruction (CPI)} & \text{Number of instructions executed} \\ \hline \text{Branch} & \text{2} & 2.25 × 10^8 \\ \hline \text{Load} & \text{5} & 1.20 \times 10^8 \\ \hline \text{Store} & \text{4} & 1.65 \times 10^{8} \\ \hline \text{Arithmetic} & \text{3} & 1.30 \times 10^8 \\ \hline \end{array}$$