
Matt H. answered 02/26/15
Tutor
5.0
(335)
What are these letters doing in my equations? Here comes algebra!
Hi Krystal--
Call the Gobi "g"
And since the Sahara is 7 times as big, call it "7g"
The two together, or g + 7g, equal 4 million, or
8g = 4,000,000
Which means g = ... can you do it from here?
Hope this helps!
Matt in NY
Krystal G.
02/26/15