Advertisements
Advertisements
Question
After 16 years, Seema will be three times as old as she is now. Find her present age.
Solution
Let the present age of Seema be x years.
After 16 years:
Seema's age = x + 16
After 16 years, her age becomes thrice of her age now
∴ x + 16 = 3x
or, 16 = 3x − x [Transposing x to the R.H.S.]
or, 2x = 16
or, `(2x)/2=16/2` [Dividing both the sides by 2]
or, x = 8 years
APPEARS IN
RELATED QUESTIONS
Complete the last column of the table.
Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
5x = 25 | x = 0 |
Solve the following equation by trial and error method:
5p + 2 = 17
Write the given equation in statement form:
`(3m)/5 = 6`
By how much is 2x − 3y + 4z greater than 2x + 5y − 6z + 2?
Write the following statement as an equation:
If 12 is subtracted from a number, the result is 24.
Solve the following equation by the trial-and-error method: `1/2x+7=11`
Solve the following equation by the trial-and-error method: 2y + 4 = 3y
The distance (in km) travelled in h hours at a constant speed of 40 km per hour is ______.
Change the following statements using expressions into statements in ordinary language.
(For example, Given Salim scores r runs in a cricket match, Nalin scores (r + 15) runs. In ordinary language − Nalin scores 15 runs more than Salim.)
Jaggu is z years old. His uncle is 4z years old and his aunt is (4z − 3) years old.
Complete the table and by inspection of the table, find the solution to the equation 5t = 35.
t |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
______ |
5t |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
______ |