(1)1* * There are 28 people by boat, and each boat is full. If the ship is limited to 8 people and the boat is limited to 4 people, how can we charter a boat?

(2) If you rent a big ship 10 yuan and a small boat/6 yuan, which chartering scheme is the most economical?

Second, the answer

(1) Scheme 1:

Because: 28÷4=7 (one), you can rent 7 boats.

Option 2:

Because 4×5+8× 1=28 (people), you can rent a big boat and five small boats of 1.

Option 3:

Because 4+8×3=28 (person), you can rent 1 boat and 3 large boats.

Answer: * * * Three chartering schemes: ① seven boats; ② Rent 1 large ship and 5 small boats; ③ Rent 1 boat and 3 large boats.

(2) Scheme 1:

Rent 7 boats, * * * cost:

6×7=42 (yuan)

Option 2:

Rent 1 large boat and 5 small boats, * * * cost:

10× 1+6×5

= 10+30

=40 (yuan)

Option 3:

Rent 1 boat and 3 large boats, * * * cost:

6+ 10×3

=6+30

=36 (yuan)

36 & lt40 & lt 42

Therefore, the chartering scheme of renting 1 ship with three large ships is the most economical.

A: The most economical charter scheme is to rent 1 ship three large ships.

Tips for learning mathematics

1, you should be good at thinking when learning mathematics, and the answers you come up with are far more impressive than those others say.

2. Prepare well before class, so that we can better digest and absorb the unknown knowledge points in math class.

3, the mathematical formula must be memorized, and it must be deduced and can be deduced.

4. The most basic thing to learn mathematics well is to master the knowledge points of textbooks and exercises after class.

5. 80% of the scores in mathematics come from the basic knowledge, and 20% of the scores are difficult, so it is not difficult to test 120.