The playground of the experimental primary school is a rectangle, 240m long and150m wide. Draw a plan according to the ratio of the actual length to the length of 3000: 1. How many centimeters are the length and width?

240m = 24000cm 24000/3000 = 8cm

150m = 15000cm 15000/3000 = 15cm

8 cm long and 0/5 cm wide.

Rectangular wheat field, perimeter150m, length-width ratio of 3: 2. What is the area of this wheat field?

150/2 = 75m

3+2=5

75 * 3/5 = 45 meters

75 * 2/5 = 30m

45 * 30 =1350m2

In a field with a length of 30m and a width of 12m, tomatoes, cucumbers and eggplants are planted, among which tomatoes account for 5/ 12 of the total area, and the rest are 3: 2 kinds of cucumbers and eggplants. How many square meters should cucumber and eggplant be planted respectively?

30 *12 = 360m2

360 * 5/ 12 = 150 m2

360- 150 = 2 10 m2

3+2=5

2 10 * 3/5 = 126 m2

2 10 * 2/5 = 84 square meters

Tomato 150 m2, cucumber 126 m2 and eggplant 84 m2.