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There are 240 workers in the workshop. The number of male workers is three times that of female workers. How many male and female workers are there
If there are x female workers, there will be 240-1:3x male workers
X:(240-X)=1:3
X=60
There are 60 female workers and 240-60 male workers = 180
Let female worker x male worker 3x + 3x = 240
X = 60 3x = 180 question: I want to use proportional knowledge to answer, thank you
The ratio of boys to girls in a class is 5:4. There are 30 boys and how many girls
There are x girls
30：X=5：4
5X=120
X=24
Twenty-four
Hello:
There are x girls
30 ：x=5 ：4
x=24
A: there are 24 girls
There are 56 workers in the first workshop of a factory. The ratio of male to female workers is 3:5. How many male and female workers are there in this workshop
1. The ratio of male to female workers is X: (56-x)
2. List the scale equation:
x：(56-x) =3：5
3. In a proportional equation, two outer products are equal to two inner products
5x=（56-x）*3
X = 21
4. So
Male workers: x = 21
Female workers: 56-x = 35
On the map with a scale of 1:6000000, the distance between a and B is 8 cm. A and B leave a and B at the same time and meet each other after 4 hours. It is known that the speed ratio of a and B is 5:7. How many kilometers do a and B walk each hour?
Hello:
A. B actual distance between the two places:
8÷1/6000000
=48000000 (CM)
=480 (km)
Speed and speed of two vehicles:
480 △ 4 = 120 (km / h)
Speed of vehicle a:
120÷（5+7）×5
=10×5
=50 (km / h)
Vehicle B speed:
120-50 = 70 (km / h)
8x6000000=48000000cm=480km
480 divided by 4 = 120 km / h
A: 120 divided by (5 + 7) * 5 = 50 km
B: 120-50 = 70 km
The two trains a and B start from a and B at the same time and run in opposite directions. After 1.5 hours, they meet at 18 kilometers away from the midpoint. It is known that the speed of train a is 1.2 times that of train B. how many kilometers did the two trains travel when they met?
18 × 2 △ 1.5 △ 1.2-1 = 24 △ 0.2, = 120 (km). 120 × 1.2 = 144 (km). 120 × 1.5 = 180 (km). 144 × 1.5 = 216 (km)
When car a runs two fifths of the way, car B runs 48 kilometers
Given that the speed ratio of a and B vehicles is 5:4, how many kilometers is the distance between a and B?
48 ﹣ 4 / 5 ﹣ 2 / 5 = 150 km
There are a people in the first workshop of a factory. The number of people in the second workshop is six times less than that in the first workshop. The number of people in the third workshop is ten more than half of that in the second workshop. How many more people are there in the first and third workshops than that in the second workshop?
According to the meaning of the question: the first workshop is a person, the second workshop is (2a-6) person, and the third workshop is 12 (2a-6) + 10 (person), then the number of people in the first and third workshops is more than that in the second workshop, a + 12 (2a-6) + 10 - (2a-6) = a + A-3 + 10-2a + 6 = 13 (person)
On the map with a scale of 1:6000000, it is measured that the distance between a and B is 8cm. A and B leave each other at the same time and meet each other four hours later. It is known that the speed ratio of a and B is 5:7. How many kilometers does a and B travel per hour?
Actual distance: 8 △ 1 / 600 0000 = 4800 0000 cm = 480 km
Speed and speed: 480 △ 4 = 120 km
5+7=12
A speed: 120 × 5 / 12 = 50 km
B speed: 120 × 7 / 12 = 70 km
On the map with a scale of 1:6000000, it is measured that the distance between a and B is 8cm. A and B leave each other at the same time and meet each other four hours later. It is known that the speed ratio of a and B is 5:7. How many kilometers does a and B travel per hour?
Distance 8 △ 1 / 6000000 = 48000000cm = 480km
Speed 480 △ 4 × 5 / (5 + 7) = 120 × 5 / 12 = 50 km / h
B speed 50 × 7 / 5 = 70 km / h... deployment
On the map with a scale of 1:6000000, it is measured that the distance between a and B is 8cm. A and B leave each other at the same time and meet each other four hours later. It is known that the speed ratio of a and B is 5:7. How many kilometers does a and B travel per hour?
Distance 8 △ 1 / 6000000 = 48000000cm = 480km
Speed 480 △ 4 × 5 / (5 + 7) = 120 × 5 / 12 = 50 km / h
B speed 50 × 7 / 5 = 70 km / h
The two trains a and B start from a and B at the same time and run in opposite directions. After 1.5 hours, they meet at 18 kilometers away from the midpoint. It is known that the speed of train a is 1.2 times that of train B. how many kilometers did the two trains travel when they met?
18 × 2 △ 1.5 △ 1.2-1 = 24 △ 0.2, = 120 (km). 120 × 1.2 = 144 (km). 120 × 1.5 = 180 (km). 144 × 1.5 = 216 (km)
The distance between AB and a is 200 kilometers, and a and B vehicles leave from ab at the same time. When a vehicle reaches two fifths of the whole journey, B vehicle reaches one fourth of the whole journey. At this time, the distance between the two vehicles is () kilometers. Urgent! Ask for answer, ask for ideas! Answer to the top
Distance 200 × (1-2 / 5-1 / 4) = 70 km
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