找到你今天要练的题。

There are 170 blocks in a container. Of these blocks, 10% are green. How many blocks in the container are green?

432 is 96% of what number?

21 is 21% of what number?

After 20% of the original number of marbles in a group were removed from the group, 360 marbles remained in the group. How many marbles were removed from the group?

There are a total of 840 seats in a school auditorium. During an assembly, students occupied 50% of the seats in the auditorium. How many seats did the students occupy during this assembly?

There are 320 marbles in a container. Of these marbles, 10% are red. How many marbles in the container are red?

In March, the price of a collectible card was $15.50. In April, the price of the collectible card was $17.36. The price of the collectible card in April was p% of the price of the collectible card in March. What is the value of p?

The percent increase in mass of a certain red kangaroo from 80 days old to 160 days old was 676%. If this red kangaroo's mass was k grams at 80 days old, which expression represents its mass, in grams, at 160 days old?

A business owner plans to purchase the same model of chair for each of the 81 employees. The total budget to spend on these chairs is $14,000,which includes a 7% sales tax. Which of the following is closest to the maximum possible price per chair, before sales tax, the business owner could pay based on this budget?

The number a is 60% greater than the positive number b. The number c is 45% less than a. The number c is how many times b?

The value of a toy increased by 193% from the end of 2016 to the end of 2017 and then decreased by 31% from the end of 2017 to the end of 2018. What was the net percentage increase in the value of the toy from the end of 2016 to the end of 2018?