Please help!!!

This is a resistance calculation problem for construction equipment. Given facts shown below, answer the four questions:

Facts:

A fully loaded wheeled scraper $($empty weight $=25\mathrm{.}0$ tons; fully loaded weight $=75\mathrm{.}0$ tons$)$ must travel up a $2\mathrm{.}5\%$ slope on a muddy haul road.

The average tire penetration of the machine is estimated to be $3\mathrm{.}5$ inches.

After dumping the loaded weight, the scraper returns downhill with an empty weight.

Type all your work with a final answer to each question below.

Q$(1)$ What is the total resistance force in lb$.$ that the machine is going uphill?

Q$2)$ Determine the effective grade $(\%)$ for the total resistance of going uphill?

Q$3)$ What is the total resistance force in ll$.$ that the machine is coming downhill?

Q$4)$ Determine the effective grade $(\%)$ for the total resistance of coming downhill?