The width of a rectangular swimming pool is 4 feet less than its length. The perimeter of the pool is
112 feet. Find the dimensions of the pool.

When y’all answer can y’all explain too !

Can someone explain to me how to do

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)