Jin is 3 floors above ground level in a hotel. Leila is on a parking level of the hotel that is 4 floors below ground level. How many floors are they apart are they? Draw a number line to show 3 - (-4).

Step-by-step explanation:

Consider the ground level as 0 (zero)

Jin is 3 floors above ground level in a hotel.

Hence Jin is in third floor from the ground level (0,1,2 and 3rd floor)

Leila is on a parking level of the hotel that is 4 floors below ground level.

Since the parking is below, it is named as -4 th floor (0, -1, -2, -3 and -4th floor)

They are part by 7 floors, 3 - (-4) = 7

Refer the attachment for number line diagram

1/800 is the right answer