# Unknown number

Samuel wrote unknown number. Then he had add 200000 to the number and the result multiply by three. When it calculated he was surprised, because the result would have received anyway, if write digit to the end of original number. Find unknown number.

Result

x =  85714

#### Solution:

3(x+200000)=10x+2

7x = 599998

x = 85714

Calculated by our simple equation calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! #### To solve this verbal math problem 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. Unknown number 11 That number increased by three equals three times itself?
2. Unknown number Identify unknown number which 1/5 is 40 greater than one tenth of that number.
3. Find x Solve: if 2(x-1)=14, then x= (solve an equation with one unknown)
4. Equation Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
5. Number with ones The first digit of the number is 1, if we move this digit to the end we get a 3 times higher number, which is the number?
6. Write decimals Write in the decimal system the short and advanced form of these numbers: a) four thousand seventy-nine b) five hundred and one thousand six hundred and ten c) nine million twenty-six
7. Symbols If 2*3 = 60 ; 3*4 = 120 and 4*5 = 200, what is 2*5?
8. Factory In the factory workers work in three shifts. In the first inning operates half of all employees in the second inning and a third in the third inning 200 employees. How many employees work at the factory?
9. Log Worker cut his thick log to 6 pieces for 30 min. How long he cut log to 12 pieces?
10. Equation ?
11. Simple equation Solve for x: 3(x + 2) = x - 18
12. Infirmary Two thirds of children from the infirmary went on a trip seventh went to bathe and 40 children remained in the gym. How many children were treated in the infirmary?
13. Tickets 3 A total of 645 tickets were sold for the school play. They were either adult tickets or student tickets. There were 55 fewer student tickets sold than adult tickets. How many adult tickets were sold?
14. Cakes Grandmother baked cakes. Half of its was poppy, quarter with plum jam and 16 cheesecakes. How many cakes she baked in total?
15. Forest nursery 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?
16. Simple equation Solve the following simple equation: 2. (4x + 3) = 2-5. (1-x)
17. Equation 29 Solve next equation: 2 ( 2x + 3 ) = 8 ( 1 - x) -5 ( x -2 )