-
Anonymous users2024-02-07Let the ratio of the number of completions per day of A to the total amount be x, and the proportion of the number of completions per day of B to the total amount of y is, then there is:
15*（x+y）=1；
5*x+3*y=7/30;
Joint solution: x=1 60;y=1/20;
Here x=1 60 is the fraction of what you need A to complete this batch of parts every day;
I'm a novice doing a task, and the hero is raising his noble hand, Xiaosheng is grateful!
-
Anonymous users2024-02-06The cooperation of A and B is completed in 15 days, then the cooperation of A and B is completed in 1 15 per day, then the cooperation of A and B is completed in three days and 1 15 3=1 5
Since A does 5 days and B does 3 days, he can complete 7 30 of all tasks, then A can do 7 30-1 5 = 1 30 in 2 days, then A completes 1 30 2 = 1 60 every day
-
Anonymous users2024-02-05A and B do one-fifteenth of the task every day, let A complete x every day, and B completes yx+y=one-fifteenth every day.
5x+3y=7/30
Xie Dejia does one-thirtieth of a day.
-
Anonymous users2024-02-04Summary. Hello dear. I can provide you with the following references; Pro, the first figure has a circumference of 18cm
How to do this question, please send the answer.
Hello dear. I can provide you with the following references; Pro, the first figure has a circumference of 18cm
The perimeter and area of the two are also written in the algorithm.
Hello dear. I can provide you with the following references; Pro, the first figure has a circumference of 18cmThe circumference of the second figure is also 18cm
Find the perimeter and area of the figure (1 cm on the sides of each small square?)
Hello dear. I can provide you with the following examples of wide dispersion with reference to Zheng; Pro, the first figure has a circumference of 18cmYou can add up the length of the outside of the long and the erected hills.
6+6+3+3 = 18 cm The circumference of the second figure is also 18cm 5+5+3+3=18cm
What are the areas?
Hello dear. I can provide you with the following references; Pro, the first graphic stool height circumference is 18cm. You can add up the length of the outside of the long and vertical spring thickness.
6+6+3+3 = 18 cm The circumference of the second oak figure is also 18 cm 5 + 5 + 4 + 4 = 18 cm
Hello dear. I can provide you with the following references; You can try to move the small square vanity block at the top and bottom into a rectangle, the first shape is 1 8=8cm, the first shape is 2 4=8cm
The second picture is how much is the area.
Hello, dear. I can provide you with the following references; You can try to move the small square at the top and bottom into a rectangle, the first shape is the area of the key and the grasp is 1 8=8cm You can try to move the small square at the top and bottom into a rectangle, and the second shape is 2 4=8cm
I only thought of this method, so I'll talk to you.
A six-digit number, so the first digit can be taken from 1-9. >>>More
1 2000 can be simplified by hypothesis Hypothesis 1: (1+1 2+1 3)*(1 2+1 3+1 4)-(1+1 2+1 3+1 4)*(1 2+1 3) The result is 1 4 Hypothesis 2: (1+1 2+1 3+1 4)*(1 2+1 3+1 4+1 5)-(1+1 2+1 3+1 4+1 5)*(1 2+1 3+1 4) The result is 1 20 (1+1 2+1 3+. >>>More
1。The total length of this road is y.
40%*y+4+50%*y=y-36 >>>More
1) 5525 is obviously divisible by the smallest prime number 5 except 1, which is the easiest to see, so after dividing 5, we can get 1105, and the same as above can obviously be divided by 5 again, and we get 221, which is already a prime number, so the 3 prime numbers found are 5,5,221, so the surface area can be s=2(5*5+5*221+5*221)=4470 >>>More
1.The ratio is 2 times larger than the former term, and 3 times smaller than the latter term, and the ratio is 6 times the original ratio. >>>More