Current location - Training Enrollment Network - Mathematics courses - Xiaoming donated 40 books on Chinese, Mathematics and English to his alma mater, with a car value of 3,965,438+a unit price of 0 yuan.
Xiaoming donated 40 books on Chinese, Mathematics and English to his alma mater, with a car value of 3,965,438+a unit price of 0 yuan.
Set the Chinese book X, the math book Y and the English book Z, X, Y and Z as positive integers.
x+y+z=40，①
7x+8y+ 10z=39 1，②
①× 10-②, we get
3x+2y=9，
So x= 1, y=3, (x=3, y=0 does not meet the problem).
At this time, z=40-x-y=36,
So there are 1 Chinese books, 3 math books and 36 English books.