Three friends spent 42 hours painting a neighbor’s house. john painted 1/3 of the time, lenny worked 3/7 of the time, and abby painted the rest of the time. how many hours did each friend paint? what would happen if another friend joined them, and they divided the work up evenly among them, how much more, or less, would john, lenny and abby each have painted?

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Ithink i know it but i want to be sure so can you me out ?