Answer:
120
Step-by-step explanation:
Total Distance = 4km
Each person takes 4/5km
Calculate the number of times the tent has to change hands:

7.7 the answer in 7.7 because 2+5 = 7 and 3+4= 11
Answer:
x=80
Step-by-step explanation:
The sum of interior angles in a quadrilateral is 360°
the square represents a right angle= 90 degrees
124+66+90=280
360-280=80
x=80