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Anonymous users2024-02-101.Put 20 grams of salt into 80 grams of water, and after three days, only 30 grams of evaporated salt water will be evaporated, and the concentration of salt water will be increased by how many percent compared with the original?
1.Two garment factories, the ratio of suits produced is 11:10, the number of suits produced in April is 6:5, it is known that the total output value of these two factories in April is 40.6 million yuan, and the output value of these two factories in April is how many thousand yuan?
2.There are 52 students in class 6 (1) and 48 students in class 6 (2) in a school school, and the average score of all students in the two classes is a score in a mathematics test, and the average score of class six (2) is 5 points higher than that of class six (1).
3.Cut a cylinder into two semi-cylinders, the cut surface is square, the volume of each semi-cylinder after cutting is cubic centimeters, find out how many square centimeters is the surface area of each semi-cylinder?
4.A and B can complete a project in 20 days, and now team A does 6 days, team B does 8 days later, and 11 30 of the project is completed, how many days does it take for the two teams to complete the project alone?
5.As shown in the figure below, in a rectangular ABCD, AB = 6 cm, BC = 8 cm, and the area of the quadrilateral EFHG is 3 square centimeters. Find the sum of the areas of the shaded parts in what square centimeters?
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Anonymous users2024-02-091 Question 20 20 80 =20
Answer: Increase by 233·3.
233·3 2 Question 11 6 10 5 =33 254060 [33 33 25 = 23.1 million yuan 4060 [25 33 25 = 17.5 million yuan Answer: The output value of the two factories in April was 23.1 million yuan and 17.5 million yuan respectively.
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Anonymous users2024-02-08It's not about the number of questions, it's not about how difficult they are, it's about whether the person doing the question will think about it.
The "New Method of Peiyou Competition" compiled by Huang Dongpo in Hubei Province is difficult enough.
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Anonymous users2024-02-07A and B respectively set off from AB and traveled in the same direction, their speed ratio was 3:2 when they started, after the encounter, A's speed increased by 1 5, B's speed increased by 2 5, and when A arrived at B, B was still 26km away from A. How many kilometers are the two places apart?
Let AB and the two places be separated by x kilometers.
2/(3+2)x]/[3×(1+1/5)]=[3/(3+2)x-26]/[2×(1+2/5)]
x/9=3x/14-130/14
13x/126=130/14x=90
A, B, and C went shopping together, and 1 2 of A's money was equal to 1 3 of B's money, and 3 4 of B's money was equal to 3 5 of C's spending, and C spent 98 yuan more than A, and asked them how much money they had spent.
490 yuan. A and B run a 100-meter run (assuming their speed remains the same), and when A runs 75 meters, B runs 60 meters. So, how many meters did B run when A reached the finish line?
80 meters. 1/6 + 1/12 + 1/24 + 1/48 + 1/96 + 1/192
One degree.
Two. 3. 1, B, 15 days, A, 10 days. >>>More
Reflection after the mid-term exam.
Time passed like flowing water, and in the blink of an eye, the mid-section exam had ended, and the results had been announced. Looking at the scores on the test papers, I was surprised. Because that's not the score I really wanted. Why can't I get higher? So, I started to check myself. >>>More
Question 1: According to the original price**, the profit margin per product is 125% 90% 1 The original profit is 25 pieces 1 >>>More
Analyze the circumstances of each encounter.
The first time: B arrives at B and returns, meets A, time: 1100*2 (60+160)=10 minutes, distance B: 160*10-1100=500 meters. >>>More
1. A class has a meeting, the number of people who ask for leave is 1 9 of the number of attendees, and another person asks for leave to leave in the middle, so that the number of people who ask for leave is 3 22 of the number of attendees, so how many people are there in this class? >>>More