A boat is traveling across a square lake at 10 MPH. It takes 2 hours to go across the length of the lake. It then travels the whole width of the lake at the same speed, which takes 30 minutes. How many square miles is the lake?
How many miles is the lake? ** The lake is 20 miles across because 2 x 10 = <<2*10=20>>20
How many minutes does it take to go from bottom to top? ** If takes .5 hours to go from bottom to top because 30 / 60 = <<30/60=.5>>.5
How many miles is the lake from bottom to top? ** The lake is five miles from bottom to top because 10 x .5 = <<10*.5=5>>5
How many square miles is the lake? ** The square mileage is 100 because 20 x 5 = <<20*5=100>>100
#### 100