Please help me with this problem​

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?