First and foremost, write the equation in a fraction form:
[tex] \frac{840 km}{2 hrs} [/tex]
Divide:
[tex] \frac{840 km}{2 hrs} = 420[/tex]
Next is to multiply the answer by 7:
[tex]420 (7) = 2940[/tex]
Answer: The airplane will cover 2940 km if it travels 840 km in 2 hrs.
