You are given a balanced bid for a small bridge project.

$1.$ Unbalance the bid to obtain the maximum allowed greater early income $($Front$-$End$-$

Loading$).$ The variation in items$$ prices should not exceed $\backslash$pm $20\%$ of the balanced bid

prices. $($Note: End$-$Item: Top Soil $4$ Deep & Front$-$Items: $2-$Excavation Types$)$

$2.$ Unbalance the bid to maximize the profit; if you knew that the actual quantities of the

excavation $($soft soil$),$ excavation $($rock soil$)$ and the fill material would be $25,000,15,000$

and $3,000,$ sequentially. The variation in items$$ prices should not exceed $\backslash$pm $30\%$ of the

balanced bid prices. Calculate the percentage of extra profits due to this unbalancing