First question

1. The answer is (c) (Open everything in brackets and combine similar items to get the answer. )

The answer is (d) (You fold a rectangular piece of paper into six columns, and it will be clear at a glance. Let the width of a rectangle be x and the vertical direction be y, and the formula is x/6=y, that is, x/y=6/ 1.

the second question

1. solution: let the cost of each set of tables and chairs be x yuan, and the formula is:

60 * 100-60X =( 100-3)* 72-72X

6000-60X=6984-72X

12X=984

X=82 yuan

A: The cost of each desk and chair is 82 yuan.

2. Solution: Let the speed of B be x km/h, and the speed of A be 2x+2km/h, and get the following formula:

3X+3*(2X+2)=25.5*2

3X+6X+6=5 1

9X=45

X=5 km/h

2x+2 =12km/h

A: The speed of A is 12km/h, and the speed of B is 5 km/h. ..

Third question

The hour hand of the clock goes one hour and the minute hand goes one circle, that is, 360 *** 12 squares, with 30 squares each. When the clock goes X, the formula is 30/360 = x/2 * 360+90, and X=67.5.

I wish the landlord unlimited money and everything is awesome!