Xiaoming has 50 stamps. Xiaoli has 4 more stamps than 3 / 5 of Xiaoming's. how many stamps does Xiaoli have?

Xiaoli: 50 × 5 / 3 + 4 = 30 + 4 = 34

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1. Xiaohong and Xiaoqiang start from home at the same time. Xiaohong walks 52 meters per minute and Xiaoqiang 70 meters per minute. They meet at a on the way. If Xiaohong starts 4 minutes ahead of schedule and Xiaoqiang walks 90 meters per minute, they still meet at a. how many meters are Xiaohong and Xiaoqiang's homes apart?
2. Xiaohong and Xiaoqiang start from home at the same time. Xiaohong walks 52 meters per minute and Xiaoqiang 70 meters per minute. They meet at a on the way. If Xiaohong starts 4 minutes ahead of schedule and Xiaoqiang walks 90 meters per minute, they still meet at a. how many meters are Xiaohong and Xiaoqiang's homes apart?
3. Xiaohong and Xiaoqiang start from home at the same time. Xiaohong walks 52 meters per minute and Xiaoqiang 70 meters per minute. They meet at a on the way. If Xiaohong starts 4 minutes ahead of schedule and Xiaoqiang walks 90 meters per minute, they still meet at a. how many meters are Xiaohong and Xiaoqiang's homes apart?
4. Xiaoming and Xiaoli set out from a and B, 8km apart, and walked in opposite directions. It is known that Xiaoming's speed is 50M / min, and Xiaoli's speed is 40m / min. one hour after Xiaoming set out, Xiaoli started to set out with a pet dog. The dog shuttled back and forth between them until they met. How many kilometers did the dog run? (the known speed of the dog is 90m / min)
5. A bedroom is rectangular. The distance on the picture is 3cm wide and 4cm long. What is the actual area? The scale is 1:100
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8. A drawing of a building with a scale of 1:100 shows that its length is 80cm, and the known ratio of length to width is 4:1. What is the actual floor area of the building
9. 1. Xiaohua, who is 1.6m tall, is 5cm in height in the photo. The scale of this photo is () 2. Mr. Yuan has a 40 decimeter iron wire, which can be enclosed into a rectangle with a length of 12.6 decimeters and a width of () decimeters. This iron wire can also be enclosed into two squares with a side length of () decimeters
10. Xiaohua is 1.63 meters tall. In the photo, her height is 6 cm. The scale of this photo is () What's the answer: it seems that it can't be eliminated completely?
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17. Xiaogang and his classmates play a card game. First, they divide the cards into three piles: left, middle and right. The number of cards in each pile is equal to or more than two. Then they go through the following steps Take a card from the left pile and put it in the middle pile, Take three cards from the middle pile and put them in the right pile As many cards as there are in the middle pile, take from the left pile and put them into the middle pile of tribes. At this time, what is the number of cards in the left pile?
18. Playing card game: Xiao Ming's back to Xiao Liang, let Xiao Liang operate according to the following four steps: the first step & nbsp; distribute the left, middle and right three piles of cards, each pile has the same number of cards, and no less than two cards; the second step & nbsp; take out two cards from the left pile and put them in the middle pile; the third step & nbsp; take out one card from the right pile and put it in the middle pile; the fourth step & nbsp; There are several cards in the left pile, so take a few cards from the middle pile and put them into the left pile. At this time, Xiao Ming accurately said the current number of cards in the middle pile. What do you think is the current number of cards in the middle pile? Explain your reasons
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20. Playing card game: Xiaoming's back to Xiaoliang, let Xiaoliang operate according to the following four steps: first, distribute the left, middle and right three piles of cards, each pile of cards is no less than two, and the number of each pile of cards is the same; second, take out two cards from the left pile and put them in the middle pile; third, take out one card from the right pile and put it in the middle pile; fourth, there are several cards in the left pile, Just take a few cards from the middle pile and put them into the left pile. At this time, Xiao Ming accurately says the number of cards in the middle pile. Do you think the number of cards in the middle pile is () I think it's difficult to solve this problem. It's estimated that it's the IQ reason T ^ t,