Two companies working together can clear a parcel of land in 7 hours. working alone, it would take company a 4 hours longer to clear the land than company
b. how ong would it take company b to clear the parcel of land alone

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?