If each monkey has 8 peaches, there are still 10 peaches left. If each monkey has 9 peaches, then one monkey has less than 9 peaches, but can still get peaches. How many are there at most?

(10 + 8) △ [9 - (9-1)] = 18 △ 1, = 18 (monkeys); a: there are 18 little monkeys at most

This is a math problem! The supermarket carries out sales promotion activities, and the advertisements are as follows:
Supermarkets: buy 10 bottles of a drink, get 2 free, 158 yuan discount
Huiduo Supermarket: if you buy a box of drinks (24 bottles), you can get 5 free bottles, 406 yuan per box
If you were a buyer, where would you go to buy drinks and why/

158÷（10+2）＜406÷（24+5）
Or is it cheaper in every supermarket

In order to promote sales, supermarkets charge 3.8 yuan for one bar of soap, 8.7 yuan for three bars, 14 yuan for five bars, and at least () yuan for 16 bars

The original price of a barrel of edible oil is 36 yuan, in order to meet the "3.15", some supermarkets carry out promotional activities. Jiale supermarket can buy 4 barrels at 112 yuan, while Huimin supermarket can buy 4 barrels at the original price

112 △ 4 = 28 (yuan) 3 + 1 = 4 (barrel) 36 △ 4 = 9 (yuan) a: it's 9 yuan cheaper per barrel
36 × 3 = 108 yuan
3 + 1 = 4 (barrel)
108 △ 4 = 27 (yuan)
27＜28
A: Huimin supermarket is cheap

During the national day, a shop had a sales promotion, stipulating that "100 for 200", Aunt Li bought a 250 yuan water dispenser
Q: how much discount did Aunt Li get for this drinking water machine?

It is stipulated that 100 yuan will be given free of 200 yuan, and the price will be 250 yuan if it exceeds 200 yuan
Actual payment for 250 yuan water dispenser = 250-100 = 150 yuan
150 △ 250 = 0.6, which is equivalent to a 60% discount
Comprehensive formula
(250-100)÷250
=150÷250
=0.6
A: Aunt Li gave a 60% discount on the water dispenser

Aunt Li is from Nanjing. She went to Xinjiang on a business trip to buy 4kg grapes. When she came back to Nanjing, there were only 2kg grapes left
Aunt Li is from Nanjing. She went to Xinjiang on a business trip to buy 4kg grapes. When she came back to Nanjing, she had only 2kg left. Aunt Li couldn't understand. When she measured the moisture content of grapes in Xinjiang, it was 98%. How could it be 2kg less? Can you solve the mystery by calculation

Aunt Li is from Nanjing. She went to Xinjiang on a business trip and sold 4kg grapes. When she came back to Nanjing, she only had 2kg grapes. Aunt Li was puzzled. The moisture content of grapes in Xinjiang was 99%, and that in Nanjing was 98%. How could it be 2kg less? Can you uncover the mystery through calculation? The moisture content seems to have no change

How many bottles can I drink if I buy 80 bottles and 5 caps for 2 yuan?

First you drink 99 bottles and the remaining four caps, then ask the store to borrow one, and then return the five caps

It's two yuan for a bottle of drink, two caps for a bottle of drink, and four empty bottles for a bottle of drink. How many bottles of drink can I get at most for twenty yuan?

Up to 35 drinks, 3 bottles without lid left

An eraser 2 yuan 4 jiao, buy 4 free 1, Xiaohua bought 4, how much cheaper each?
In the absence of △ and decimal point

It's 2.4 yuan per piece. If you buy 4 yuan, it's 2 yuan and 4 jiao * 4 = 9 yuan and 6 jiao, and you get another one. So Xiaohua spends 9 yuan and 6 jiao to buy 5 pieces of rubber, which is actually 9 yuan and 6 jiao / 5 = 1 yuan and 9 Jiao 2 fen, which is 2 yuan and 4 jiao - 1 yuan and 9 Jiao 2 fen = 4 jiao and 8 Fen cheaper than the original price

In a stationery store, the price of rubber is 50 cents per piece, the price of ballpoint pen is 1 yuan per piece, and the price of signature pen is 2 yuan and 50 cents per piece. Xiaoming wants to spend 5 yuan and 50 cents on two kinds of stationery in the store, and he has a lot of money______ There are two different options

The unit prices of the three commodities are: 5 jiao, 1 yuan, 2 yuan and 5 jiao respectively, and the total amount is 5 yuan and 5 jiao, so there are eight different choices: ① one 2.5 + 6 0.5, ② two 2.5 + 1 0.5, ③ one 2.5 + 3 1, ④ 5 1 + 1 0.5, ⑤ 4 1 + 3 0.5, ⑥ 3 1 + 5 0.5, ⑦ 2 1 + 7 0.5, and Ⅷ 1 1 + 9 0.5

If each monkey has 8 peaches, there are still 10 peaches left. If each monkey has 9 peaches, then one monkey has less than 9 peaches, but can still get peaches. How many are there at most?