A furniture store buys 100 sets of tables and chairs, each with a purchase price of 200 yuan, and ma

Actual profit: 100 * 200 * (50%-18%) = 6400 yuan 40 sets of profit after discount: 6400-60 * 100 = 400 yuan per set of profit: 400 40 = 10 yuan, price before discount: 250 yuan.

Price after discount: 210 yuan.

Discount: 210 250 = Counted 3 times, no answer is right)

The expected profit is 100*100=10000, and the profit that is 18% lower is 8200, so the formula should be:

x = 255 of 18000 + 40X -20000 = 8200 solution

Hit 85% off and choose C

There is a simpler way to solve this problem, the recommended analytic formula is wrong, choose C, the actual profit is 18% lower than the expected profit, then the actual profit should be 100 * 200 * equal to 10000, then he is 1800 yuan lower, all the low money is the low price generated by the 40 pieces bought, then divide 1800 by 40 is equal to 45, a piece is 45 yuan lower, then use the actual price 300-45 is equal to 255 divided by 300, is the answer C, This kind of problem solving idea is faster than that, and there is not much time to take the exam.

Expected profit: 10,000 (100 yuan per set).

Actual profit: 10,000 * 82% = 8,200 yuan.

The profit of 60 sets is 6,000 yuan. The profit of 40 sets is 8200-6000 = 220040 sets of profit 2200 40 = 55, and the price is 255 yuan. The original price was 300 yuan. It's 85% off.

Actual profit: 100 * 200 * (1-18%) = 6400 yuan.

The profit of the first 60 sets: 60 * 100 = 6000 yuan.

Profit for each set of 40 sets: 2200 40 = 55 yuan, price before discount: 300 yuan.

Price after discount: 255 yuan.

Discount: 255 300=

Note: The profit is 50%, and the 50% profit of 200 is 100

Because (actual-expectant) expectation = 18% push actual expectation = and bring in 50% expected profit rate to push actual (profit margin) = 41%.

Actually: the cross-method in economic problems R is the ultimate rate of profit.

This is actually a mixed interest rate problem, using the cross method, the reason why it is 41 is not the reason you said above, but its entire number is divided by 2, for example, 50 is 100 divided by 2.

It is sold at a discount of 85%.

Note that it refers to 50 percent of the profit, 18 percent so of course 41

300-300X)*40 10000=, so X=

41 is (1-18%)*50