Solve a one-step real-world problem involving multiplication

Question

with rational numbers.
Lake Profondo has a depth of 84 feet. Lake Segundo is 5/6 as deep. What is the elevation at the bottom of Lake Segundo? (Remember, the elevation is below sea level. Account for this in your answer.)
Answer: -70 ft.
describe as a 7th grader in a semi-short sentance and still have some explaining on how its correct.

Answer 1

To find out how deep Lake Segundo is compared to Lake Profondo, we first multiply 84 feet by 5/6, which shows how much shallower it is. When we do the math, 84 times 5/6 equals 70 feet, meaning Lake Segundo is 70 feet deep. Since this depth is below sea level, we write it as -70 feet, so the final answer is -70 ft. This means Lake Segundo's bottom is 70 feet down from sea level, just like how we think of diving down in a pool!