5272道题目5525 条题源记录 · 相同内容已合并
百分比关系・求百分数进阶
Jasmin grows bean pods in her garden. This year, she harvested 490 bean pods and saved 10% of them to plant next year. How many of the harvested bean pods did Jasmin save to plant next year?
原库参考解析
百分比关系・求百分数基础
The positive number a is 240% of the number b, and a is 90% of the number c. If c is p% of b, which of the following is closest to the value of p?
原库参考解析
百分比关系・求百分数挑战
A scientist analyzed a soil sample with a mass of 900 grams and determined that it contained 189 grams of water What is the percentage of water, by mass, in this soil sample?
原库参考解析
百分比关系・求百分数挑战
The table summarizes the number of objects in each group.
The number of objects in group C is p% of the number of objects in group A. What is the value of p?
原库参考解析
百分比关系・求百分数挑战
Of 400,000 objects in a group, 312,000 are new. What percentage of objects in that group are new?
原库参考解析
百分比关系・求百分数进阶
Jasmin grows bean pods in her garden, This year, she harvested 490 bean pods and saved 10% of them to plant next year, How many of the harvested bean pods did Jasmin save to plant next year?
原库参考解析
百分比关系・求百分数挑战
According to a set of standards, pure biodiesel fuel can contain a maximum of 0.001% phosphorus by mass. If a sample of pure biodiesel fuel has a mass of 310 grams, what is the maximum mass, in grams, of phosphorus the sample can contain to meet these standards?
原库参考解析
百分比关系・求百分数挑战
According to a set of standards, pure biodiesel fuel can contain a maximum of 0.001% phosphorus by mass.If a sample of pure biodiesel fuel has a mass of 310 grams, what is the maximum mass, in grams, of phosphorus the sample can contain to meet these standards?
原库参考解析
百分比关系・求百分数进阶
A scientist analyzed a soil sample with a mass of 900 grams and determined that it contained 189 grams of water. What is the percentage of water, by mass, in this soil sample?
原库参考解析
百分比关系・求百分数挑战
If 310% of n is 62, what is the value of n?
原库参考解析
百分比关系・求百分数挑战
A barrel contains 32 liters of a chemical solution. 50% of this chemical solution, by volume, is water. How much of this chemical solution, in liters, is water?
原库参考解析
百分比关系・求百分数进阶
The positive number a is 2,800% of the number c, and c is 25% of the number b. If \( a-b=wc \) , where w is a constant, what is the value of w?
原库参考解析
