Current location - Training Enrollment Network - Mathematics courses - The percentage of application problems is above 20.
The percentage of application problems is above 20.
1. There are 8 students in Senior One who have reached the physical education standard, and the physical education compliance rate of the whole grade is 96%. How many students are there in Grade One? How many students have reached the standard in physical education?

2. Suppose the annual interest rate of bank savings is 0.6%, and Zhang San deposited 8000 yuan in June 65438+0.990+1 October1. Every other year, Zhang San takes out the money and deposits it all with interest. Q: By June 65,438+0,993.

Answer: 8000 * (1+0.6%) 3

There are 80 bottles of coke in the store, the number of coke bottles is less than Sprite 1. How many bottles does Sprite have?

A train from Shanghai to Tianjin has traveled 808 kilometers, and there is 1 left. How many kilometers is the railway from Shanghai to Tianjin?

There is a batch of potato chips in the shopping mall, which sold 2/5 in the morning and 6/8 in the afternoon. There are 54 bags left. How many bags of chips are there?

7. Zhang Jiayou 15 peach trees. The number of pear trees is two-thirds that of peach trees and two-seventh that of apple trees. How many apple trees are there?

8. There are 400 cows, more than sheep 1. How many sheep are there?

Answer:

1. There are 80 bottles of coke in the shop. Coke bottles are 5% less than Sprite. How many bottles does Sprite have?

Sprite has

80/(1-1/5) =100 (bottle)

A train from Shanghai to Tianjin has traveled 808 kilometers, leaving 1. How many kilometers is the railway from Shanghai to Tianjin?

The length of railway from Shanghai to Tianjin

808/(1-1/3) =1212 (km)

There is a batch of potato chips in the shopping mall, which sold 2/5 in the morning and 4/8 in the afternoon. There are 54 bags left. How many bags of chips are there?

This batch of potato chips has been

54/( 1-2/5-4/8)=540 (bag)

5. Zhang Jiayou 15 peach trees. The number of pear trees is two-thirds that of peach trees and two-seventh that of apple trees. How many apple trees are there?

Li shuyou

15*2/3= 10 (tree)

Apple tree has

10/(2/7)=35 (tree)

6. There are 400 cows, more than sheep 1. How many sheep are there?

Yang You

400/( 1+ 1/4)=320 (head) There is a pile of candy, of which milk candy accounts for 45%. After adding 16 piece of fruit candy, milk candy only accounts for 25%. So, how many pieces of milk candy are there in this pile of candy? When it freezes into water, its volume decreases111. There are 5 cubic decimeters of water now. What is the volume after freezing? What is the volume of a 5 cubic decimeter piece of ice after melting into water?

Xiaoming reads a story book. The ratio of pages read on the first day to total pages is 3: 7. If he reads 15 page again, it is exactly half of this book. How many pages are there in this book?

Mathematics interest group * * *, 42 people, 2/7 of whom are girls. Later, several girls were added. At this time, girls accounted for 2/5 of the total number. How many girls did you add?

Two baskets of apples * * * 90kg, big basket 1/5, small basket 1/4 * * 20kg. How many kilograms of fruit are there in the big basket and the small basket?