y-x=27
y/x=4
Solution: x=9 y=36
2. Poplar =x pine = Y.
x+y=24
x/y=2
Solution: x= 16 y=8.
Let's meet in t hours.
1 10*t+80*t=570
Solution: t=3
4: A meter =x B meter = y.
x/y=2
x- 15=y+ 15
Solution: x=60 y=30
5. Sister stamp =x brother stamp = Y.
x=3y
x-6=y+6
Solution: x= 18 y= 12.
Note: pay attention to the format, the above is just the solution.
Children should study hard!