Current location - Training Enrollment Network - Mathematics courses - Ask some math questions. 1.50 kg is more than 40 kg (score)? How much is 40 kilograms less than 50 kilograms? The original price of a dress is 320 yuan, down.
Ask some math questions. 1.50 kg is more than 40 kg (score)? How much is 40 kilograms less than 50 kilograms? The original price of a dress is 320 yuan, down.
1 (50-40)÷40= 1/4=25%

(50-40)÷50= 1/5=20%

2 After price reduction: 320×( 1- 1/4)=240.

After the price increase: 240×( 1+ 1/4)=300 yuan.

3 The next day: 20× (1+6/17) = 460/17.

(20+460/ 17)÷( 1-9/ 17)= 100

This batch of goods is 100 ton.

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