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It is known that the school library bought 6 chairs and 10 tables, a total of 1224 yuan. The unit price of the table is 60 yuan higher than that of the chair. How many yuan are the unit prices of the table and chair?
Let the chair be x and the table be 60 + X, so 6x + 10 (60 + x) = 1224 x = 39, so the chair is x = 39 yuan and the table is 60 + x = 39 + 60 = 99 yuan
The school bought six tables and nine chairs for 675 yuan
Given that a chair is equivalent to one third of the price of a desk, how much is each chair?
Suppose the chair is x yuan, then the desk is 3x yuan
6*3x+9x=675
27x=675
x=25
So each chair is 25 yuan
Satisfactory adoption~~~~~~~~~~~~~
The school bought 12 sets of single desks and chairs, 75 yuan for each desk and 55 yuan for each chair. How much more did it cost to buy a desk than a chair?
(75-55) × 12 = 20 × 12 = 240 yuan; a: it costs 240 yuan more to buy a table than a chair
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