Current location - Training Enrollment Network - Mathematics courses - The ten coins in the first volume of mathematics in the fifth grade of the Primary School Learning and Practice Park are composed of 20 yuan and 50 yuan, with a total value of 4 10 yuan. How many RMB
The ten coins in the first volume of mathematics in the fifth grade of the Primary School Learning and Practice Park are composed of 20 yuan and 50 yuan, with a total value of 4 10 yuan. How many RMB
The ten coins in the first volume of mathematics in the fifth grade of the Primary School Learning and Practice Park are composed of 20 yuan and 50 yuan, with a total value of 4 10 yuan. How many RMB sheets are there? If you use arithmetic instead of equations,

50 yuan has: (410-20x10)/(50-20) = 7 (sheets).

20 yuan has: 10-7=3.

Analysis: Assume that 10 is from 20 yuan, and the total number is 20x10 = 200.

Actually, 4 10 is 4 10-200=2 10, which is more than 200 yuan.

And more than 50 to 20 is 50-20 = 30 yuan.

So the number of 50 sheets is 2 10/30=7 (sheets).