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Math problem in the sixth grade: a TV set first increases its price by 10%, and then decreases its price by 10%. Is the ratio of current price to original price high or low? Why?
Low, set the original price of TV to 1, then
After the price increase, the TV price is1* (1+10%) =1.
After the price reduction, the TV price is1.1* (1-10%) = 0.99.
1-0.99=0.0 1
The current price is 0.99, which is 0.0 1 lower than the original price.