Mathematics

Problem

10\,\text{ft}

streetlamp stands on level ground. A

6\,\text{ft}

tall person is

x

feet from the base of the lamp and casts a shadow of length

s

feet along the ground. Which of the following equations correctly relates

x

and

s

at that instant? a)

10(x+s)=6s

6(x+s)=10x

10s=6(x+s)

10s=6x