1100
(420*10)-(12*100)= 4200-1200= 3000
2000 - 40% = 60% of 2000 = 2000*60/100 = 1200
1200-600=600
7% of 1200 = (7/100) of 1200 = (7/100) * 1200 = 84
1200
12
1200
1200
The answer is 100 feet.
82% of 1200 = 1200*82/100 = 984
7% of 1200 is 7/100 of 1200, which is 84.
There are: 1200/12 = 100