Big brother and sister help, 4th grade summer vacation paradise math problem 20 pages counting vote

From the inscription, it can be seen that Ding got the least number of votes:

A = B + 30

A = C + 35

A = D + 48

It can be concluded that 3A = B + C + D + 113

3A = 87 - A + 113

4A = 200

A = 50, so D is 50-48 = 2 sheets.

If A gets x, then B gets x-30

C received x-35 votes

D's vote was x-48.

So x +(x-30) +x-35) +x-48)=87, and the solution is x=50

Therefore, Ding received the least number of votes, with 2.

Of course it's Ding, there are only 2 votes.

D 2 sheets, so A is 2 + 48 = 50 sheets, B is 50-30 = 20 sheets, and C is 50-35 = 15 sheets.

Total of A, B, C, D: 50 + 20 + 15 + 2 = 87

Have you ever studied equations?

If A has x votes, B will have x-30, C will have x-35, and D will have x-48.

x+(x-30)+(x-35)+(x-48)=87 gives x=50

Therefore, A has 50 votes, B 20, C 15, D 2, and D the least.

A has 30 more votes than B: A = B + 30 35 votes more than C; A-35=B+30-35=B-5 48 more votes than D; A-48=B+30-48=B-18 Let B x vote then there is [x+30]+x+[x-5]+[x-18]=87 The solution is x=20, so x+30=50 x-5=15 x-18=2 So Ding got at least 2 cards Classmate, my sister finally typed it, choose me.

Method 1: Since a total of 2 hours were walked, subtracting the distance taken in the first hour and subtracting the distance traveled in the second hour by subtracting the distance traveled in the second hour is equal to the remaining distance.

274-86-74=114 (km).

Method 2: Find the total distance traveled in the first 2 hours, and then subtract the total distance traveled in the first 2 hours to equal the remaining distance.

274-86-74=114 (km).

Method 1: 274-86-74 = 114 km.

Method 2: 274-(86+74)=144 km.

It can also be solved by two methods: step-by-step calculation and comprehensive calculation.

There are 3 purchase plans.

Option 1: Buy the first type of chair.

The remaining money: 2000-18 * 88 = 416 (yuan) Plan 2: buy a second kind of chair.

The remaining money: 2000-18 * 92 = 344 (yuan) Plan 3: buy a third kind of chair.

The remaining money: 2000-18 * 105 = 110 (yuan) Answer: There are three purchase plans, buy the first kind of chair, and there is 416 yuan left; Buy the second type of chair, there is still 344 yuan left; Buy a third type of chair, there is still 110 yuan left.

2000 18=, the average unit price can not be exceeded.

So there are three options.

The first type is 88 yuan: the remaining 2000-18 * 88 = 416 yuan, the second kind is 92 yuan: the remaining 2000-18 * 92 = 344 yuan, the third kind is 105 yuan, and the remaining 2000-18 * 105 = 110 yuan.

Three kinds, buy 18 sets of the first type, buy 18 sets of the second type, buy 18 sets of the third type.

There are 416 yuan and 344,110 yuan left respectively for adoption.

2000 divided by 18 =

Therefore, the average ** of each chair cannot exceed yuan.

Because it is to buy the same chair, there are only one that is eligible, and there are three options:

Buy the first type of chair: 2000 - 88 18 = 2000 - 1584 = 416

Buy a second type of chair: 2000 - 92 left 18 = 2000 - 1656 = 344

Buy a third type of chair: 2000 - 105 18 = 2000 - 1890 = 110

2000 18 = about 111 yuan.

Because it's all the same.

Therefore, the first three chairs can be bought directly in all of them.

It is 18 sets of the same chairs, then the first scheme is 18 sets of the first type of chairs 18*88=1584 and the remaining 2000-1584=416

The second option is 18 sets of chairs of the second type: 18*92=1656, leaving 2000-1656=344

The third option is 18 sets of third chairs: 18*105=1890, leaving 2000-1890=110

It is not possible to buy 18 sets of chairs of the fourth type, because ** exceeds 2000 yuan.

Because it is the same 18 sets of tables and chairs, 2000 18=, so you can only buy chairs below 111 yuan, and you can buy them.

88*18=416 yuan.

92*18=344 yuan.

105*18=110 yuan.

There are three kinds of 1Buy the first kind of chair 18 * 88 = 1584 yuan and leave 2000-1584 = 416 yuan.

2.Buy the second 18 * 92 = 1656 yuan and the remaining 2000-1656 = 344 yuan.

3 。Buy the third kind 18 * 105 = 1890 yuan and the remaining 2000-1890 = 110 yuan.

To buy the fourth one, it costs 18 * 129 = 2322 yuan and is greater than 2000 yuan [rounded off].

(1500+2700) 2=2100 2700 6=450

1500+2700) (4+6)=420 (pieces) (1500+2700) (4+6) (20+10)=14 (pieces) This is also too easy If you don't know how to do this kind of question, you have to make up for it

1.(1500+2700)/2=2100

3,(1500+2700) (4+6)=2104,(1500+2700) (4+6) (20+10)=14 Little handsome guy, do math to understand the question o, like the third question and the fourth question are 2 questions that are missing, the answers are really different, be careful

In fact, this is written with it, no one reads it, how busy the teacher is, and he sells scrap after collecting a bunch of them Sister, I'm a college student, and I've already experienced this.

lzmzxz1990 is quite right.

Great minds think alike.

Solution: Because 2000 8 = 250

In other words, the 2000-meter distance can be divided into 250 8-meter distances, because the two trees form a distance between them.

Therefore, trees need to be planted on each side of the highway = 250 + 1 = 251 trees, and because the highway is divided into left and right sides, trees need to be planted.

So total = 251 2 = 502 trees.

I hope you will adopt.

Methods for this type of problem:

Number of intervals = road length spacing.

A tree on one side: 1, both the head and the tail: a tree = the number of intervals + 12, and one end is not: a tree = the number of intervals.

3. There is no head and tail: tree = number of intervals -1

250 + 1 = 251 trees.

251 2 = 502 trees.

Solution: The number of trees that need to be planted on each side of the highway is 2000 8+1=251 (trees);

Therefore, a total of 251x2=502 (trees) should be planted

Solution: Because 2000 8 = 250

In other words, the 2000-meter distance can be divided into 250 8-meter distances.

Because the two trees whispered about it, and the potatoes happened to form a distance.

Therefore, trees need to be planted on each side of Gongqi Orange Road = 250 + 1 = 251.

And because the road is divided into left and right sides, trees need to be planted.

So total = 251 2 = 502 trees.

Hope you can.

2+9+9+9+9+9+8=55

In summary, the answer should be: 2999998 there is more than one answer, and there are 1999999.

Method 1: 274-86-74 = 114 km.

Method 2: 274-(86+74)=144 km.