Math Shirley Apple 550g. 3 Shirley 2 apples 1500 grams, ask Shirley how many apples they are

From Shirley + apples = 550 grams, get 2 Shirley + 2 apples = 1100 grams, because 3 Shirley + 2 apples = 1500 grams, subtract the above two formulas to get:

So 1 Shirley = 1500-1100 = 400 grams, 1 apple = 550-400 = 150 grams.

Shirley + Apple = 550 grams.

3 * (Shirley + apples) = 3 Shirley + 3 apples = 3 * 550 grams = 1650 grams.

Again, 3 Shirley + 2 apples = 1500 grams.

Therefore one apple = 150 grams;

Again, Shirley + Apple = 550 grams.

Therefore one Shirley = 400 grams;

2 Shirley + 2 apples = 550 2 = 1100 grams, 3 Shirleys + 2 apples = 1500 grams.

Then 1 Shirley = 1500-1100 = 400 grams.

Then 1 apple = 550-390 = 150 grams.

3 Shirley + 2 apples = 1 Shirley + 2 (Shirley + apples) = 1500 grams.

So, 1 Shirley = 1500-1100 = 400 (grams).

1 apple = 550-400 = 150 grams.

Set Sydney x and apple y.

It can be obtained: x+y=550 3x+2y=1500 solution: x=400 y=150

So, 400 grams of pears, 150 grams of apples.

Shirley + apples = 550 grams, then, 2 Shirleys + 2 apples 550 2 = 1100 (grams).

Shirley: 1500-1100 400 (g).

Apples: 550-400 = 150 (grams).

15 9 5 Pretend to be 3

Answer: Xiaohua's apples are 5 to 3 times that of Xiaoli.

Answer: The apple of the hall celebration Xiaoli is the 3 of the small flower of the finch5.

Let the unary equation:

Let the apples be x catties.

8x+(6-x)*6=40

It is obtained that x=2pear=6-2=4

Binary Linear Equations.

Solution: Let apple x kg, Sydney y kg, { x+y=68x+6y=40

x=2 kg，y=4 kg

A: ......

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Apples bought 2 kilograms, pears 6 kilograms, <>

Let the apple buy x kilograms, then the pear bought 6-x kilograms, the equation is: 8x+6(6-x) 40, that is, 8x+36-6x 40, move the term to get 2x 40-36=4, and find x 4 2=2

So apples bought 2 kg, pears bought 6-2 = 4 kg.

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Questions. <>

Which topic. Questions.

Question 23 below.

Which one is the specific question?

Questions. All questions for the second and third questions.

I'm sorry, but I can only solve one problem for you at a time.

Questions. Then the second one of the second questions.

Good. <>

If there are x pears, then there are 180-x apples, 2x-30=180-x, 3x=210, x=70, 180-70=110, and there are 70 pears and 110 apples.

If you buy another 30 apples, it's just twice as many pears.

(180+30) (2+1) = 70 pears

180-70 = 110 apples.

Sydney: (90+10) (1+3)=25.

Apples: 90-25 = 65.

or apples: 25 3-10 = 65 pcs.

x number of apples. Sydney 90-x pcs.

3(90-x)-10=x

270-3x-10=x

4x=260

x = 65.

90-x=90-65=25.

This is the and times the problem

When the sum is 90 10 100, the apple is exactly 3 times the size of Sydney, then their sum 100 is 3 1 4 times that of Sydney.

So Sydney has: (90 10) (3 1).

25 apples: 25 3 10 65 (apples).

Sydney = 205 (1+4 5)=

I can't get in or out, there seems to be a problem with the quality of the question, you take a closer look at the question. The number 205 must be a multiple of 9 to facilitate this question.

If the pear is x kg, then the apple is 4 5x kg.

x＋4／5x=205

x=4 5x=4 5 kg.

Let Sydney have x kilograms.

x＋4/5x＝205

9/5x＝205

x 114205-114 91 (kg).

Apples are about 91 kilograms and pears are about 114 kilograms.

Solution: Let Sydney have x kilograms, then.

1 dec. 4 5) x = 205

9/5x=205

x=1025/9

x = 113 and 8 9

205 a 113 and 8 9 = 91 and 1 9

Answer: Apples have 91 and 1 9 kilograms, and Sydney has 113 and 8 9 kilograms.

Calculate according to the proposition of the column (300+40) (1-2 5) Solution: The key words in the application problem are average, division is generally used, multiplication is generally used, and addition and subtraction are generally used for who is more or less than whom, and columnar formulas are applied according to the keywords. Problem solving process:

A: A total of 1150 kilograms of pears and apples.

Extended Data - Reduction Process: The basis for judging whether a fraction is the simplest fraction can be based on whether the common factor of the numerator and denominator is only 1, if there is only 1, the fraction is the simplest fraction, and vice versa; If the numerator and denominator are decimal, they can be rounded before being judged.

Problem solving: Because the common factor of the numerator and denominator is [1, 2]340 2: the simplest fraction is 170

If you have any doubts, please ask and be satisfied.

Solution: Set x kg of apples and 5-x kg of pears.

4x+3(5-x)=17

4x+15-3x=17

x=17-15

x = 2 A: 2 kg of apples, 3 kg of pears.