Real simple, a boat traveled 112 miles downstream and back. the trip downstream took 4 hours. the trip back took 8 hours. what is the speed of the boat in still water? what is the speed of the current? an explanation how would be much appreciated.

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

What multiplys to be 1 but adds up to be 4