Please set X to solve the problem (there are three problems) 1: 8 times of a number plus 10 equals 10 times of the number minus 8 to find the number 2: The average of the two numbers is 24.6. The number a is twice the number B. what is the number B? 3: Mom bought three bags of milk and a bottle of drink, which cost 10.35 yuan. The price of each bottle of drink is 1.5 times that of each bag of milk. How much are the prices of drinks and milk?

Please set X to solve the problem (there are three problems) 1: 8 times of a number plus 10 equals 10 times of the number minus 8 to find the number 2: The average of the two numbers is 24.6. The number a is twice the number B. what is the number B? 3: Mom bought three bags of milk and a bottle of drink, which cost 10.35 yuan. The price of each bottle of drink is 1.5 times that of each bag of milk. How much are the prices of drinks and milk?

1: Let the number be x.8x + 10 = 10x-810x-8x = 10 + 8x = 18 △ 2x = 9 2: the average of the two numbers is 24.6, where the number a is 2 times the number B, how much is the number B? Let the number B be x, then the number a is 2x. X + 2X = 24.6 × 2x = 49.2 △ 3x = 16.43

1. There are 240 peach trees and apricot trees in the orchard. The number of apricot trees is three times that of peach trees. How many peach trees and apricot trees are there
2. Students take part in tree planting activities. There are 8 more poplar trees than pine trees. There are 26 poplar trees. How many pine trees are there
3. My mother bought 5kg apples and 8kg pears, which cost 23.04 yuan in total. 1.92 yuan per kilogram of apples. How much yuan per kilogram of pears

1.3x + x = 240, 4x = 240, x = 60, 3x60 = 180 A: there are 60 peach trees and 180 apricot trees
2.2x + 8 = 26 2x = 18 x = 9 A: there are 9 pine trees
5 x 1.92 + 8 x = 23.04 8 x = 13.44 x = 1.68 yuan a: 1.68 yuan per kilogram of pear

The area of a square is 121 square centimeters. What is the perimeter of this parallelogram?
2、 Smart surfing
Xiaoyu's telephone number is 7 digits, and is a multiple of 2, 3 and 5. The first three digits are 326, and the last four digits are the smallest after 326. Can you work out the number of Xiaoyu's telephone number?
3、 Fill in the blanks
The sum of the three consecutive odd numbers is 129. The three consecutive odd numbers are (), (), ()

11 ^ 2 = 121, so the perimeter is 11 * 4 = 44
Divided by three, it means that the sum of each digit should be a multiple of 3, divided by 5 should be a multiple of 5, divided by 2 should be a multiple of 2, which is both a multiple of 2 and 5. The last digit must be zero, and the sum of each digit is a multiple of 3, so choose the smallest one, obviously 3260010
Let the middle number be x, then the three numbers are X-2, x, x + 2 respectively
From the title, we can get X-2 + X + X + 2 = 129, the solution is x = 43, so the three consecutive odd numbers are 41, 43 and 45 respectively