The student who asked how many years he answered: "After 10 years I will be twice as old than as I was four years ago. How old is student?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 1 comment:
This may be unclear
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- 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?
Annie aunt is 35 years old, Annie is 14 years. For how many years will aunt have twice as many years as Annie?
- Family 8
Father is 38 years old, daughter 12, son 14. How many years will father have as many years as his children together?
Mom is 39 years old. Karl is eight years and Paul 4 years. For many years mother would old just like two children together?
- 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?
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?
Susan's age will be after 12 years four times as much as twelve years ago. How old is Susan now?
- Bed time
Tiffany was 5 years old; her week night bedtime grew by ¼ hour each year. If, at age 18, her curfew time is 11pm, what was her bed time when she was 5 years old?
Seven times of my age is 8 less than the largest two-digit number. How old I am?
- 15 number
What number is smaller (greater) by 15 than its half?
- Equation 29
Solve next equation: 2 ( 2x + 3 ) = 8 ( 1 - x) -5 ( x -2 )
- Simple equation
Solve the following simple equation: 2. (4x + 3) = 2-5. (1-x)
- Unknown number 11
That number increased by three equals three times itself?
- Dropped sheets
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?
- Negative in equation
2x + 3 + 7x = – 24, what is the value of x?
- Simple equation
Solve for x: 3(x + 2) = x - 18
- Find x
Solve: if 2(x-1)=14, then x= (solve an equation with one unknown)