The road in the residential area is 930 meters long, and it is planned to install a lantern every three meters on both sides of the road.

Need 3 10 colored lights and 3 10 65W bulbs.

Installing a lantern every 3 meters means installing a lantern every 3 meters on the road. You can calculate the number of colored lights by dividing the total length by the interval length. Colored lights need to be installed on both sides of the road, totaling (L/D+ 1). The numerical value substituted in the title is 930/3+ 1=3 10. Calculate the number of bulbs needed. According to the requirements in the title, each lantern needs a 65-watt light bulb. The number of light bulbs required is equal to the number of colored lights, that is, 3 10.