Can someone help me solve this geometry problem tysm

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

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.

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?