The sum of 86, 68, and 38 is 192. what do you also know about the sum of 68, 38, and 86? explain

Can someone pls ! pls answer all. no explanation needed..

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?