1600/0.8=2000
The price of a piano is reduced by 20%, which is exactly 1800 yuan. What is the original price of this piano?
1800/0.2=9000
A piano costs 7200 yuan after 20% reduction. What is the original price of this piano?
7200/0.8=9000
A book, I read 25% on the first day, 1 on the second day, with 50 pages left. How many pages are there in this book?
After reading1/4+1/3 = 7/12, there are 5/ 12 and 50 pages left, 50/(5/ 12)= 120.
This book has 120 pages.
A rectangular flower bed is 36 meters in circumference, and its length and width account for 80% respectively. What is the area of this flower bed?
Let the length be x.
2x+ 1.6x=36 x= 10 Width 8 Area 80
A commodity is sold after the cost price is increased by 30%. Later, due to seasonal reasons, it was sold at a 20% discount. After the price reduction, the price of each piece is 104 yuan. Is it a loss or a profit to sell this commodity for one piece? Compensation or?
Cost price x
Price 1.3x
There is a 20% discount. After the price reduction, the price of each piece is 104 yuan.
1.3x-( 1.3 * 0.8x)= 104 0.26 x = 104 x = 400
Cost price 400
After the price reduction, the price is 4 16, earning 16 yuan.