Question $2$: Size distributions and balances

$($i$)$ Below is a crushing circuit with a vibratory screen preceding a cone head crusher. Use the given particle size distribution of $1$ and $3$ to calculate the particle size distribution of the final product $4$

$($ii$)$ Which is the coarse material between $1$ and $3?$

$($iii$)$ How many tons of material in stream $1$ is below $2mm?$

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