Analysis: According to the meaning of the question, you can buy 2.5 boxes of white chalk with the money for buying 1 box of colored chalk, then you can buy 4×2.5= 10 box of white chalk with the money for buying 4 boxes of colored chalk. So it can be understood that Hua 32 yuan bought 10+4×2.5=20 (boxes) of white chalk, so that the price of 1 plate of white chalk can be calculated.
Solution:
(1) How many boxes of white chalk can four boxes of colored chalk replace?
4×2.5= 10 (box)
(2) How much is the white chalk per box?
32÷ (10+10) = 32÷ 20 =1.6 (yuan)
(3) How much is the colored chalk per box?
1.6×2.5=4 (yuan)
A: One box of white chalk 1.6 yuan and one box of colored chalk 4 yuan.
1. It costs 27 cents to buy an eraser and four pencils. The price of buying the same eraser and two pencils is 1.5 cents. How much is an eraser and a pencil?
2. Class A bought four pencils and three ballpoint pens with 20 cents from 4 yuan's money; Class B bought four pencils and eight ballpoint pens for 10 yuan 20 cents. Q: What is the unit price of pencils and ballpoint pens?
3. Mom buys 6 meters of white cloth and 8 meters of printed cloth. It costs 2 1 RMB 30 cents. Aunt Wang needs 18 yuan to buy the same 6m white cloth and the same 6m printed cloth. Q: How much are white cloth and printed cloth per meter?
4. Mom buys 2kg of candy and 1 kg of biscuits, and * * * pays 7 yuan 20 points. If she bought 1 kg candy and 2 kg cookies, she would have to pay 6 yuan money. How much are sweets and biscuits per kilogram? 5. Xiaoming bought 6 copies of Hongyan and 5 copies of Xinhua Dictionary with 7 yuan 2 jiao; I just bought 5 Hongyan and 6 Xinhua Rain Books with 7 yuan 1. How much are Hongyan and Xinhua dictionaries?
Respondents: enthusiastic users | 2011-7-1815: 00.
1. It costs 27 cents to buy an eraser and four pencils. The price of buying the same eraser and two pencils is 1.5 cents. How much is an eraser and a pencil?
2. Class A bought four pencils and three ballpoint pens with 20 cents from 4 yuan's money; Class B bought four pencils and eight ballpoint pens for 10 yuan 20 cents. Q: What is the unit price of pencils and ballpoint pens?
3. Mom buys 6 meters of white cloth and 8 meters of printed cloth. It costs 2 1 RMB 30 cents. Aunt Wang needs 18 yuan to buy the same 6m white cloth and the same 6m printed cloth. Q: How much are white cloth and printed cloth per meter?
4. Mom buys 2kg of candy and 1 kg of biscuits, and * * * pays 7 yuan 20 points. If she bought 1 kg candy and 2 kg cookies, she would have to pay 6 yuan money. How much are sweets and biscuits per kilogram? 5. Xiaoming bought 6 copies of Hongyan and 5 copies of Xinhua Dictionary with 7 yuan 2 jiao; I just bought 5 Hongyan and 6 Xinhua Rain Books with 7 yuan 1. How much are Hongyan and Xinhua dictionaries?