Advertisements
Advertisements
Question
Set up equation and solve them to find the unknown number in the following case:
Munna subtracts thrice the number of notebooks he has from 50, he finds the result to be 8.
Advertisements
Solution
Let the number of books be x.
Thrice the number of books = 3x
50 - 3x = 8
-3x = 8 - 50 ...(Transposing 50 to R.H.S.)
-3x = -42
Dividing both sides by -3
`(-3x)/(-3) = (-42)/(-3)`
x = 14
APPEARS IN
RELATED QUESTIONS
Set up equation and solve them to find the unknown number in the following case:
Ibenhal thinks of a number. If she adds 19 to it and divides the sum by 5, she will get 8.
In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is 180°).
Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?
Find a number, such that one-fourth of the number is 3 more than 7.
In a bag there are 5 and 2 rupee coins. If they are equal in number and their worth is ₹ 70, then
The worth of x coins of ₹ 2 each ______.
If 5 is added to three times a number, it becomes the same as 7 is subtracted from four times the same number. This fact can be represented as ______.
My younger sister's age today is 3 times, what it will be 3 years from now minus 3 times what her age was 3 years ago. Find her present age.
The perimeter of a rectangle is 40 m. The length of the rectangle is 4 m less than 5 times its breadth. Find the length of the rectangle.
Follow the directions and correct the given incorrect equation, written in Roman numerals:
Move one matchstick to make the equation valid. Find two different solutions.
The given figure represents a weighing balance. The weights of some objects in the balance are given. Find the weight of each square and the circle.
