A developer has land that has x feet of lake frontage. The land is to be subdivided into lots, each of which is to have either 80 feet or 100 feet of lake frontage. If 1/9 of the lots are to have 80 feet of frontage each and the remaining 56 lots are to have 100 feet of frontage each, what is the value of x ?  Choose the correct choice from the following options:
A) 400
B) 3,200
C) 6,160
D) 4,400
E) 4,760
Total number of plots,be T   Plots with 80ft is (1/9)th of total plots.   Plots with 100ft frontage = (8/9) X total number of plots   i.e 8/9 X T = 56 T = 63   Total lake frontage = 56X100 + 7X80 = 6160   Answer : 6,160
<result>C</result>
A developer has land that has x feet of lake frontage. The land is to be subdivided into lots, each of which is to have either 80 feet or 100 feet of lake frontage. If 1/9 of the lots are to have 80 feet of frontage each and the remaining 56 lots are to have 100 feet of frontage each, what is the value of x ?