A merchant could sell one model of digital cameras at list price and receive $210 for all of them. If he had five more cameras, he could sell each one for $7 less and still receive $210. Find the list price of each camera.
$

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.