The sum of two times of a number and three times of it is equal to half of 80
Let this number be X
2X+3X=80÷2
5X=40
X=8
5 times of a number and 3 times of it get 56.4, find this number
Let this number be X
5X+3X=56.4
8X=56.4
X=56.4÷8
X=7.05
RELATED INFORMATIONS
- 1. 56 is 24 more than 2 / 3 of a yes. What's the number
- 2. Use the equation: the sum of 5 times of a number and 60% of the number is 56. What is the number?
- 3. The equation x ^ 2-5x + 6 = 0 has two roots, which are X1 = 2 and X2 = 3. Try to write the two roots of equation (X-7) ^ 2-5 (X-7) + 6 = 0 directly
- 4. (- 8) × (- 12) × (0.125) × (- 1 / 3) =?
- 5. () × 1 / 8 = 0.2 × () = (): 2 / 3 = 1
- 6. If x + X + X + y + y = 54, x + X + y + y = 56, then x=______ ,y=______ .
- 7. The number of chickens is 20% less than that of ducks, and how many percent more than that of chickens?
- 8. Aunt Wang raised many chickens and rabbits. It is known that there are 13 more chickens and 16 more feet than rabbits. How many chickens and rabbits are there?
- 9. Granny Wang's family has a number of chickens and rabbits. It is known that there are 13 more chickens than rabbits. They have 146 feet. How many chickens and rabbits do they have?
- 10. There are 2000 chickens and rabbits in the farm, 560 less than rabbits. How many chickens and rabbits are there
- 11. 40% of a number is equal to three-quarters of 16. Find this number? 40% of a number is 0.5 more than one-third of it. Find this number? (use equation solution) It is necessary to make a formula calculation
- 12. The following equations are listed: (1) the number 4 less than a is equal to 5; (2) the difference between half B and 8 is 6; (3) Two times x is three times bigger than ten
- 13. What's 25% more than 60% of 200
- 14. 75% of a number is 60 more than 45% of this number. To find this number, use the solution of the equation
- 15. 60% of the number a is 3.5 more than 25% of the number A. find the number A. (with the solution of the equation)
- 16. Multiply a number by 10 to get 72 more than the original number. What's the original number?
- 17. 15 eights are 10 times more than 4 times of a number. Find this number. (solution of equations)
- 18. 15 eights are 10 times more than 4 times of a number. How about this sequence equation? Thank you
- 19. An employee: it's going to transport 35 tons today Another employee: 5 tons at a time Three times in the morning, how many times in the afternoon?
- 20. Ask the fifth grade simple equation 100! Alas, we have 10 equations every day for our summer homework. We have finished all the equations in the book, and there are still 10 days to go, so we need to solve 100 equations,