Question

A city currently has 129 streetlights. As part of a urban renewal program, the city council has decided to install 3 additional streetlights at the end of each week for the next 52 weeks.How many streetlights will the city have at the end of 45 weeks?—————

Answer 1

Solution

Step 1

Current number of streetlights = 129

Step 2

Number installed per week = 3

$\begin{gathered} Number\text{ of straightlights installed in 45 weeks = 3 }\times\text{ 45} \\ =\text{ 135} \end{gathered}$

Step 3

Number of straightlights at the end of 45 weeks = 129 + 135 = 264

Final answer

256