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Three people are going to rent a boat, and each boat can take four people. How many boats can you rent?
Rent 7 boats; Rent 2 big boats and 4 small boats; Rent 1 boat, 4 large boats.

Interpretation and analysis:

There are three chartering schemes.

1, one ship and three big ships.

Option 1: 28÷4=7, renting 7 boats;

2. Four boats and two big boats.

Option 2: 6x2+4x4=28, renting 2 large boats and 4 small boats;

3. Seven ships.

Option 3: 4+6x4=28, rent 1 boat and 4 large boats;

A: Rent 7 boats; Rent 2 big boats and 4 small boats; Rent 1 boat, 4 large boats.

Extended data:

This topic mainly investigates the application of elementary arithmetic and conditional distribution.

According to the total number of people who take the boat and the number of people who can take the big boat and the small boat, the boat plan is determined as follows: 4x7=28, 4x4+6x2=28, and 4+6x4=28. If each boat is full, use seven boats first, then subtract three boats and add two big boats until there are 1 boats.