Solution: Let a * * * have X monkeys.

x- 1=0.5x+0.5

0.5x= 1.5

x=3

At this time, 3× 1- 1 = 2 (root)

A * * * has three monkeys and two bananas.

Explanation: Both sides of the equation are the total number of bananas, so they are equal, which should be 1×x but omit 1 (written stipulation).

Arithmetic:

(1+0.5) ÷ (1-0.5) = 3 (pieces)

3× 1- 1 = 2 (root)

A * * * has three monkeys and two bananas.

Explanation: 1+0.5 refers to the "change" of bananas for monkeys, and 1-0.5 means that each monkey gets 1, which is 0.5 less than half a monkey gets. Division means that it is precisely because these half roots are missing that this score is added: 1.5 roots (the difference between the two methods is 1.5 roots). The number of monkeys is obtained by division.