A city currently has 137 streetlights. As part of an urban renewal program, the city council has decided to install 2 additional streetlights at the end of each week for the next 52 weeks.

Question

The city will have 225 streetlights at the end of 44 weeks.

The city will have 233 streetlights at the end of weeks.

Answer 1

137 + 2w

w=44

137+2(44)= 137+88= 225 after 44 weeks

137+2(52) = 137+104 = 241 after 52 weeks

233 = 137+2(x)

2x = 233-137= 96

x= 96/2 = 48 weeks when streetlights are 233