The area of Desert A is three times the are of Desert B. If the sum of their areas is 1,200,000 square miles, find the area of each desert

Question

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Answer 1

let x = the area of Desert B, then 3x = the area of Desert A

 

3x + x = 1,200,000

 

4x = 1,200,000

 

x = 300,000 mi² = area of Desert B

 

The area of Desert A = 3x = 3 * 300,000 = 900,000 mi²