Solve the following problem using the MS Excel Solver tool and confirm it with the graphical method.

Highlight your optimum point and paste the graph on the excel spreadsheet alongside the Solver solution.

The three princes of Serendip

Went on a little trip.

They could not carry too much weight

More than $300$ made them hesitate.

They planned to the ounce, when they returned to Ceylon

They discovered that their supplies were just about gone.

When, what to their joy, Prince William found

A pile of coconuts on the ground.

$$Each will bring $65$ coins,$$ said Prince Richard with a grin

As he almost tripped over a lion$$s skin.

$$Look put!$$ cried Prince Robert with glee

As he spied some more lion skins under a tree.

$$These are worth even more $300$ coins each

If we can just carry them all down the beach.$$

Each skin weighed fifteen pounds and each coconut five,

But they carried them all and made it alive.

The boat back to the island was very small

$15$ cubic feet baggage capacity that was all.

Each lion skin took up one cubic foot

While eight coconuts the same space took.

With everything stowed they headed to sea

And on the way calculated what their new wealth might be$.$

$$Eureka$!$ cried Prince Robert, $$Our worth is so great

That there's no other way we could return in this state.$$

$$Any other skins or nut that we might have brought

Would now have us poorer.$$ Prince William$$s joy buoyant

Dr$.$ Jagani asked what their total wealth was.

His students at ISU solved it in a toss.