Please solve with Excel. PROBLEM $1$

There are four websites GGC can advertise on$-$MSN$,$ Yahoo, Facebook, and Atlanta

Chronicle. The cost and reach of each ad on these websites are given below:

GGC wants to reach $1200000$ potential students through these websites while keeping the

cost to the minimum. GGC wants to have at least five ads on each website and not more than

$20$ ads on Facebook. In addition, the number of ads on MSN has to be at least twice the

number of ads on Yahoo. Using Linear programming, find out an advertising strategy for

GGC$.$