Current location - Training Enrollment Network - Mathematics courses - Xiaohong and Xiaoming did 38 math problems, of which three-quarters as many as five-sixths were Xiao Ming's. How much did they do?
Xiaohong and Xiaoming did 38 math problems, of which three-quarters as many as five-sixths were Xiao Ming's. How much did they do?
monadic quadratic equation
Xiaohong x Xiaoming y
x+y=38
3/4 x= 5/6 y →x=20 y= 18。
Let Xiaohong be 1, her three-fourths are equal to five-sixths of Xiaoming's, and Xiaoming is 1x three-fourths ÷ five-sixths =9/ 10.