One-third

A one-third of unknown number is equal to five times as great as the difference of the same unknown number and number 28.
Determine the unknown number.

Result

x =  30

Solution:


x/3=5(x-28)

14x = 420

x = 30

Calculated by our simple equation calculator.








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

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




To solve this example are needed these knowledge from mathematics:

Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar examples:

  1. Norm
    rajcata Three workers planted 3555 seedlings of tomatoes in one dey. First worked at the standard norm, the second planted 120 seedlings more and the third 135 seedlings more than the first worker. How many seedlings were standard norm?
  2. Class 8.A
    trieda_2 Three quarters of class 8.A went skiing. Of those who remained at home one third was ill and the remaining six were on math olympic. How many students have class 8.A?
  3. Unknown number 11
    numbers_33 That number increased by three equals three times itself?
  4. Unknown number
    nums Identify unknown number which 1/5 is 40 greater than one tenth of that number.
  5. Find x
    eq222_23 Solve: if 2(x-1)=14, then x= (solve an equation with one unknown)
  6. Performance
    theathre Same number of tickets sold for 15 CZK, 20 CZK, 30 CZK and 40 CZK a total of CZK 13,230 on theatre performance. How many tickets were sold for this performance?
  7. Equation
    rovnice_3 Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
  8. Dropped sheets
    books_26 Three consecutive sheets dropped from the book. The sum of the numbers on the pages of the dropped sheets is 273. What number has the last page of the dropped sheets?
  9. Cakes
    cookies_2 Grandmother baked cakes. Half of its was poppy, quarter with plum jam and 16 cheesecakes. How many cakes she baked in total?
  10. Negative in equation
    eq1_7 2x + 3 + 7x = – 24, what is the value of x?
  11. Simple equation
    axes_1 Solve for x: 3(x + 2) = x - 18
  12. Equation
    serwisy_chemia_01 ?
  13. Equation 29
    eq222_18 Solve next equation: 2 ( 2x + 3 ) = 8 ( 1 - x) -5 ( x -2 )
  14. Forest nursery
    stromcek_2 In the forest nursery after winter, they found that 1/10 stems died out of them. For them, they land 193 new spruces. How many spruces are in the forest nursery?
  15. Classroom
    deti_skola In a class are 32 pupils. Boys are 8 less than girls. How many boys and girls are in the classroom?
  16. 7 roses
    roses_1 Peter buys 7 roses. When he pay for it left him 4 euro. If he bought 5 roses left him 40 euros. How many euros had Peter before buying?
  17. Aunt
    teta Annie aunt is 35 years old, Annie is 14 years. For how many years will aunt have twice as many years as Annie?