Question 5: Three people, A, B and C, spent the same amount of money on apples. When sharing apples, Party A, Party B and Party C both took 6 kilograms more than Party B, and as a result, Party A, Party C each gave 4.8 yuan money. How much are apples per kilogram?

A and C take more than B: 6× 2 = 12kg.

This 12kg is divided equally among three people, and each person gets: 12 ÷ 3 = 4kg.

A and C each take more: 6-4=2 Jin.

Per kilogram: 4.8÷2=2.4 yuan.

Question 6: There are two bags of flour, A and B. The weight of bag A is 1.4 times that of bag B. If you take 8 kilograms of flour from bag A, the weight of the two bags of flour is the same. How many kilograms do these two bags of flour weigh?

According to the meaning of the question,

The weight of a is 8× 2 = 16kg.

As it turns out,

B:16÷ (1.4-1) = 40 kg.

Answer: 40× 1.4=56 kg.

Question 7: How did you find this rule? It takes three sticks to swing a triangle and seven sticks to swing three triangles (3+2× 2 = 7) ... How many sticks does it take to swing a 15 triangle?

3+( 15- 1) × 2 = 3 1.

The first triangle needs three, and each triangle in the future uses one side of the original triangle and only needs two.