To calculate the glomerular filtration rate (GFR), we can use the formula:
\[
\text{GFR} = \text{Plasma Flow} - \text{Efficiency of Filtration}
\]
However, since we haven't been given an explicit measure of filtration efficiency, we can instead rely on the fact that GFR can be approximated using the renal plasma flow (RPF) and the filtration fraction (FF). The filtration fraction is typically the fraction of plasma entering the kidneys that