Office Chair for 20 Yuan
When an office chair costs 20 yuan, an office desk is priced at 60 yuan, and a set of desk and chair (including one office desk and one chair) has a total price of 80 yuan. The installation fee for each office chair ranges from 10 to 20 yuan.
Office Desk Price Calculation
Given that a chair costs 20 yuan and an office desk is equivalent in price to three chairs. According to the rules of multiplication, which is a convenient way to calculate the sum of several identical addends, the price of the office desk is $20ร3 = 60$ yuan. This applies the basic mathematical principle of multiplication, multiplying the unit price of the chair by the quantity to obtain the price of the office desk. This calculation method is very common in daily life and business activities, enabling quick and accurate calculation of the total price by clarifying the unit price and quantity of items.
Total Price Calculation for a Set of Desk and Chair
A set of desk and chair includes one office desk and one chair. To calculate the total price of a set, simply add the price of the office desk and the price of the chair. As calculated earlier, the office desk costs 60 yuan and the chair costs 20 yuan, so the total price of a set of desk and chair is $60 + 20 = 80$ yuan. This is based on the meaning of addition, which combines two (or several) numbers into one. By combining the prices of the office desk and the chair, we get the total price of a set of desk and chair.
Explanation of Office Chair Installation Fees
The installation fee for each office chair ranges from 10 to 20 yuan, which is a price range. During the actual purchase and installation process, the installation fee may be influenced by various factors, such as the difficulty of installation, the distance to the installation location, and the pricing strategy of the installation service provider. If the installation process is relatively simple and the installation location is nearby, the installation fee may be close to 10 yuan; conversely, if the installation process is complex or the installation location is far away, the installation fee may be close to 20 yuan. When purchasing office chairs, consumers need to clarify the specific amount of the installation fee with the installation service provider to avoid unnecessary disputes.
