Suppose that TCP$\text{'}$s current estimated values for the round trip time $($estimatedRTT$)$ and deviation in the RTT $($DevRTT$)$ are $350$ msec and $25$ msec, respectively. Suppose that the measured RTTs is $320$ msec

What is the value for TCP$\text{'}$s timeout value in msec? Use the values of a $=0\mathrm{.}125,$ B $=0\mathrm{.}25$