Find the application problem of the equation in the second volume of the fourth grade of Beijing Normal University!

{1}. In order to facilitate disabled people to take wheelchairs, a regulation on the height of the front slope of buildings was adopted.

Fixed: For every one-meter-high slope, at least12m horizontal length is required.

(1) How many meters of horizontal length does a two-meter slope need? What about 3 meters, 4 meters and x meters?

(2) The length of the open space in front of a building is 18m, so what is the highest slope here?

{2}. Mom went shopping in the supermarket and bought 4 cans of drinks and a pack of biscuits. * * * I spent 1 1.40 yuan, 1 biscuits 3.60 yuan, 1 how much is a can of drinks?

{3} The rectangular swimming pool covers an area of 600㎡ and is 30 meters long. How wide is the swimming pool?

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