Denali in Alaska is 5910 feet higher than Mount Rainier in Washington. Together, their heights total 34,730 feet. How high is each mountain?

Answer 1

D = 5910 + M

D+M = 34,730

5910 + M + M = 34,730

2M = 34,730-5,910 = 28,820

M = 28820/2 = 14410 feet high for Mount Ranier

D = 20,320 feet high for Denali