Answer:
25/10 is equal to (20+5)/10, which is also equal to 20/10 + 5/10. 20/10 = 2, and 5/10 = 1/2, so by simplifying, 20/10 + 5/10 = 2 + 1/2 = 2 1/2
25/10 equal 2 1/2 because when you simplify the 25/10 to the least, it will be 5/2. 2 fits twice into 5 and there is a remainder of 1/2. So, it's 2 1/2.
