The feed rate to the circuit below $($stream $1)$ is $700$ tph and the apertures on the three screens are respectively $150,25$ and $15mm.$

The size distributions of the feed $($stream$1)$ and the product from crusher $1$ are as follows

$\backslash$table$[[$Size $(mm),200,150,100,50,25,10],[$Cum $\%$ passing for stream $1,95,50,45,30,25,15],[$Cum $\%$ passing for stream $4,100,85,60,55,40,25]]$

Work out the flowrate of streams $6,8,9,10$ and $11$ in each size class if you are given the following information and you assume the screens are working perfectly. $[100$ marks$]$

$\backslash$table$[[$Size $($mm$),50,25,15,10],[$Cum $\%$ passing for stream $3$a$,90,55,40,35],[$Cum $\%$ passing for stream $8,100,75,65,55]]$