1. The distance ratio between Xiao Ming and Xiao Fang is (1+5, 1): 1 = 6: 5.

The time ratio between Xiao Ming and Xiao Fang is 1: (1+8 times 1) = 8: 9.

The speed ratio between Xiao Ming and Xiao Fang is 6 in 8: 5 in 9 = 27: 27.

2. The distance ratio between Party A and Party B is (1+31):1= 4: 3.

The time ratio of Party A and Party B is1:(1+4+1) = 4: 5.

The speed ratio of Party A and Party B is 4/4: 3/5 = 5: 3.

3. It takes 60÷5-8=4 minutes to drive 1 km by bike.

The ratio of cycling speed to walking speed is 60: 5 = 3: 1.

Lian no.2

The efficiency ratio of 1.A, b and c is1:3.5+0: 4+0 = 28: 24: 21.

Total number of copies: 28+24+2 1=73.

Quantity handled by Party A: 1825x73 28=700.

B Quantity to be processed: 1825x73 24=600.

C number to be processed: 1825x73 2 1=525.

2,5 minutes (1+25%)=4 minutes.

5x (1-2/5) = 3 minutes.

1 at 5; 1: 1 = 12: 15: 20.

12+ 15+20=47

A:12 = 240 pieces of 940x47.

B:940 x47 15 = 300.

C: 20 in 940x47 = 400.

3.65438/48+0:32 1:28 1 = 14:2 1:24

14+2 1+24=59

The first process:118x5914 = 28 people.

Second process:118x5921= 42 people.

The third process: 1 18x59 24=48 people.

Lian No.3

150: 200 = 3: 4150x74 = 85 and 5g 7.

12: 18 = 2:3 12x 5 3 = 7.2kg。

240: 160 = 3: 2 240x5 2 = 96g。

Lian No.4

1. Scheme1:54 (4-3) x4 = 216t.

Solution 2: 54 ÷ (4-3 of 7) x7 4 = 216 tons.

2. Solution 1:

(1). The original ratio of Party A and Party B was 4: 7.

(2) The later ratio of Party A and Party B is 5: 6 = 15: 18.

(3) Original book on shelf A: 154 \u( 15-4)x4 = 56 (this book)

(4) The original book of frame B: 154 \( 18-7)x7 = 98.

Scheme 2: Since the book price difference between the two bookshelves A and B has not changed, the book price difference between the two bookshelves A and B is 1.

(1) The price difference between the two bookshelves is 154 ÷ (65438+5-3-4)=42 books.

(2) The original number of books on two shelves.

A:42(7-4)x4 = 56 copies B:42(7-4)x7 = 98 copies.

3. Option 1: (1) The income ratio of the two brothers is 4: 3 = 20: 15.

(2) The expenditure ratio of the two brothers is 18: 13.

(3) The elder brother's annual income is 720÷(20- 18)x20=7200 yuan.

(4) Brother's annual income is 720 ÷ (15-13) x15 = 5,400 yuan.

Solution 2: (1) The income difference between the two brothers is 720 ÷ (14-518) =1800 yuan.

(2) The brothers' annual incomes are respectively

Brother: 1800÷(4-3)x4=7200 yuan.

Brother: 1800÷(4-3)x3=5400 yuan.

Exercise 5

1，( 12-8)÷( 1-5) = 20cm。

2, 18-6 ÷ (1-2/5) = 8 cm.

3. "After 4 minutes, the water levels of the two containers are equal." The ratio of bottom area is equal to the ratio of volume.

(2+0.4x4):(0.4x4)=9:4

3. 14x5？ 9 inch x4 = 176.625 square decimeter.