A company sells two products whose demand functions are given by

x$1=4002\mathrm{.}5$p$1$

and

x$2=6503$p$2.$

The total revenue is given by

R $=$ x$1$p$1+$ x$2$p$2.$

Estimate the average revenue $($in dollars$)$ when price p$1$ varies between $$25$ and $$50$ and price p$2$ varies between $$75$ and $$125.($Round your answer to two decimal places.$)$

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