Question

A bird flies from the bottom of a canyon that is 63 1/5feet below sea level to a nest that is 857 7/10feet above sea level. What is the difference in elevation between the bottom of the canyon and the bird's nest?

Answer 1

step 1

we have that

above sea level is positive

below sea level is negative

so

The difference in elevation between the bottom of the canyon and the​ bird's nest is equal to

857 7/10-(-63 1/5)

857 7/10+63 1/5

To adds the fractions convert to an improper fraction or decimal number

857 7/10=857+7/10=857+0.7=857,70

63 1/5=63+1/5=63+0.20=63.20

Find the sum

857.70+63.20=920.90 ft

Convert to mixed number

920.90 ft=920+0.90=920+9/10=920 9/10 ft