Astring of decorative lights is 25 feet long. the first light on the string is 16 inches from the plug. the lights on the string are spaced 4 inches apart. how many lights are there on the string?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.