Question

Eve takes a subway train to work that travels at an average elevation of -14 feet. Jacob takes a bus to work that travels at an average elevation 14 feet higher than eves train. What is the average elevation the bus travels at?

Answer 1

`0\text{ feet}`

Explanation:

GIVEN: Eve takes a subway train to work that travels at an average elevation of
`-14` feet. Jacob takes a bus to work that travels at an average elevation
`14` feet higher than eves train.

TO FIND: Average elevation the bus travels at.

SOLUTION:

Average elevation of subway train
`=-14\text{ feet}`

Now,

Jacob takes a bus to work that travels at an average elevation
`14\text{ feet}` higher than that of subway train.

Average elevation of bus
`=\text{Average elevation of subway train}+14`

putting the value

Average elevation of bus
`=14+(-14)`

`=14-14=0\text{ feet}`

Hence the average elevation at which the bus travels at is
`0` feet or ground level.