Solution: x= 1.8
,∴ 1.8X 12=2 1.6
A: The first pile has 2 1.6 tons.
2. Assume that the distance between Party A and Party B is xkm.
∴V bus =x/ 10, v train =x/ 15, ∴ 240/(x/10) = ((x-240) x15)/(.
Solution: x=400
The distance between the two cities is 400 kilometers.
3. Let * * have x pieces of clothes.
∴60X(3/8)x= 1800
, the solution is: x=80.
∴ Cost =60X(5/8)x-200=60X50-200=2800 yuan.
Suppose there are X people waiting in line, and A people sign in every minute.
∴(20a+x)/20X2=(8a+x)/8
Solution: x=40a
∴ The speed of each ticket gate is
(20a+40a)/20=3a
It takes y minutes to set up three ticket gates.
∴(ya+40a)/(3aX3)=y, (y+40)/9=y, then the solution is: y=5.
It takes five minutes to complete the inspection.