You are on a boat. If you go along the river you are on, then in 5 hours you can go 60 kilometres. If you go against the river, then you in 10 hours you can go 60 kilometres. What is the speed of the river?
PLS HELP ME AND PUT A MATH SENTENCE IN THE EXPLANATION

One side of a rectangle is 7 centimeters shorter than six times the other side. find the length of the longer side if we also know that the perimeter of the rectangle is 266 centimeters.

Fawn bought a total of 70 cakes for a tea party. she spent $3,025. fawn bought vanilla cakes for $22 each and a fruit filled cake for $55 each. the system of equations below can be used to find the number of vanilla cakes, v, and the number of fruit filled cakes, f, fawn purchased. which system of equations has the same solution as the system below.

Kaitlin is on s long car trip.every time she stops to buy gas,she loses 15 minutes of travel time.if she has to stop 5 times,how late will she be getting to her destination?