Proportional application problem solving, more urgent, proportional method to solve application prob

Question 1, 600 (5+3+2) 3=600 10 3=180, requires 180 kg of sand.

Question 2, 135-15) (3+3+4) 3=120 10 3=36, 36 people in workshop B, 36 3 4=48, 48 people in workshop C, 36+15=51, 51 people in workshop A.

Question 3, 10 (11 12-5 6) = 10 1 12 = 120, the lower layer originally had 120 copies, 120 5 6 = 100, the upper tier originally had 100 copies, 120 11 12 = 110, the upper tier now has 110 copies, 120 + 110 = 230, and the two floors now have a total of 230 copies.

Question 4, 80 4 (5+3+2) 5=20 10 5=10, length 10cm, 80 4 (5+3+2) 3=20 10 3=6, width 6m, 80 4 (5+3+2) 2=20 10 2=4, height 4cm, 10 6 4=240, volume 240cm.

Question 6, 2A = B + C, ,4 B = A + C, , gets, 4B-2 A = A-B, 5B = 3 A, A: B = 5:3, A = B 5 3, 2 B 5 3 = B + C, C = B 7 3, A:

B: C = 5 3:1:

1. 5 + 3 + 2 = 10

600 divided by 10 = 60 (kg).

60 times 2 = 120 (kilograms).

120-100 = 20 (kg).

If x kilograms of liquid medicine are required, then the water is kilograms, and the equation according to the meaning of the question is:

x：(:1500

1500x+x=

1501x=

then x = solution x = kilograms).

then the water required is: kg).

Set the score of the lead stool for the pigeon is 7x 11, and the score of the sparrow is 4x 11, and the total number is x, so the extra points and the handicap correspond to the extra number, so 3x 11 = 120

x=440

Long uphill distance = 50 (1+2+3) = 50 6 = 25 3 Uphill time = (25 3) 3 = 25 9

The ratio of uphill time to the whole journey time = 4 (4 + 5 + 6) = 4 15 The time taken for the whole journey = (25 9) (4 15) = (25 9) * (15 4) = 125 12 hours = 625 minutes.

Complex ratio of two kinds of apples A and B ** ratio 5:4, quality ratio 2:3--- then the ratio of the total price of two kinds of apples A and B = (5 * 2) :( 4 * 3) = 5:6

The total price of apple A = 100 * yuan.

The total price of apple B = 100 * yuan.

The mass of a type of apple = 100 * 2 (2 + 3) = 40kg The mass of a type of apple = 100 * 3 (2 + 3) = 60kg The unit price of a type A apple = 200 40 = 5 yuan.

The unit price of B apples = 240 60 = 4 yuan.

Verify that the price-to-unit ratio is 5:4

Solution: Let A x kg and B kg

40x＋60×

x=5A: A is 5 yuan kg, B is 4 yuan kg

"Crispy Rice Xiaobao" Hello, I am happy to answer for you!

Solution: The actual length of the part is: 180 900 mm) A: The actual length of the part is mm.

Upstairs was wrong, he forgot to add a decimal point.

Hope mine is helpful to you

The actual length of the part = 180 900 = 2 mm.

Let's start by calculating the real interest rate, 12 1 20000