Question

A new road was added near Riana's neighborhood. The road is 5 miles long and the city plans to place a streetlight every 1/10 mile. There already is a streetlight at the beginning of the new road. How many streetlight will be placed on the road?

Answer 1

Number of streetlight = Length of the road/distance between two streetlight

= 5/(1/10)

= 5×10

= 50
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Answer 2

Solution:-

Length of the road = 5 miles
Distance between every two streetlights = 1/10 miles
Total number of streetlights placed on the new road = 5 ÷ 1/10
= 5*10
= 50 streetlights
As there is already a streetlight at the beginning of the new road, so the number streetlights will be = 50 - 1 
= 49 
Answer.