Elementary school mathematics set x
Caption: 560*3/8 includes 3/8 of Class 1, Grade 3 and 3/8 of Class 2, Grade 3. Subtract 190, leaving 3/8 of Class 1, Grade 3 minus 2/7 of Class 1. According to the formula of primary school, 10 accounts for 10%, so the total is 10 divided by 65.