Answer:
the original is 1080.
Step-by-step explanation:
80%×600=480
480+600=1080
System A has ONE real solution
System B has NO real solutions
System C has ONE real solution
400 yards x 5= 2,000 yards keisha walked. 1 mile equals 1,760 yards. Now to find the 2 miles in yards multiply 1760 x 2= 3,520. So 2 miles equal 3,520 yards. Now subtract 3,520 - 2,000