Number unknown

Adela thought the two-digit number, she added it to its ten times and got 407. What number does she think?

Result

a =  37

Solution:


a+10a = 407

11a = 407

a = 37

Calculated by our simple equation calculator.



Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

You need to know the following knowledge to solve this word math problem:

Next similar math problems:

  1. Unknown number xyz
    numbs_1 Find the number that its triple is 24. Solve by equation.
  2. Seven times
    numberline_12 Which number seven times is just as higher as 27, how much is smaller than 29?
  3. Number of songs
    notes Write an expression for the number of songs they need for this show. Evan and Peter have a radio show that has 2 parts. They need 4 fewer than 11 songs in the first part. In the second part, they need 5 fewer than 3 times the number of songs in the first
  4. I think
    numbers_49 I think a number. When I multiply it by five, and after that I subtract 477, I get the same number as if I multiplied it twice. What number do I think?
  5. What is missing (1000)
    red_minus What number is to add to get 1000?
  6. Equation with one variable
    eq1 Solve the following equation with one unknown: 5(7s + 5) =130
  7. Cords joining
    snura_1 Mum needs 6 cords long 360cm long. How many does she need when they are sold at 9 meters and does not want to join it up?
  8. Roman numerals
    roman_1 Write numbers written in Roman numerals as decimal.
  9. Expression
    numbers If A=2 B=3 evaluate expression A(B+A) and multiply it by A
  10. Summand
    plus One of the summands is 145. The second is 10 more. Determine the sum of the summands.
  11. Product
    complex-colors Result of the product of the numbers 1, 2, 3, 1, 2, 0 is:
  12. Eq1
    eq1_3 Solve equation: 4(a-3)=3(2a-5)
  13. Six te 2
    eq1 If 3t-7=5t, then 6t=
  14. Hotel
    postielka The rooms in the mountain hotel are double and triple. Double rooms are 25 and triple are 17 more. How many rooms are there in this hotel?
  15. Discount
    phone The new phone was discounted by 2800kč. After this discount, 5 phones cost 5530 CZK more than 3 phones before the discount. How much did the phone cost before the discount?
  16. If-then equation
    triangles_10 If 5x - 17 = -x + 7, then x =
  17. Jan and Dan
    skolske-zosity Jan and Dan had the same money. Jan bought 5 workbooks and left him 15 CZK. Dan 6 and left him nothing. How much money have in total?