Advertisements
Advertisements
प्रश्न
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
उत्तर
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
संबंधित प्रश्न
Irfan says that he has 7 marbles more than five times the marbles Parmit has. Irfan has 37 marbles. How many marbles does Parmit have?
Solve the following riddle:
I am a number,
Tell my identity!
Take me seven times over
And add a fifty!
To reach a triple century
You still need forty!
Sum of two numbers is 81. One is twice the other.
The equation formed is ______.
The length of a rectangle is two times its breadth. Its perimeter is 60 cm.
Perimeter in terms of x is ______.
In a Mathematics quiz, 30 prizes consisting of 1st and 2nd prizes only are to be given. 1st and 2nd prizes are worth ₹ 2000 and ₹ 1000, respectively. If the total prize money is ₹ 52,000 then show that:
The number of 1st prizes are ______ and the number of 2nd prizes are ______.
If 10 is subtracted from half of a number, the result is 4.
A number divided by 2 and then increased by 5 is 9.
Follow the directions and correct the given incorrect equation, written in Roman numerals:
Remove two of these matchsticks to make a valid equation:
What does a duck do when it flies upside down? The answer to this riddle is hidden in the equation given below:
If i + 69 = 70, then i = ? If 8u = 6u + 8, then u = ?
If 4a = –5a + 45, then a = ? if 4q + 5 = 17, then q = ?
If –5t – 60 = – 70, then t = ? If `1/4`s + 98 = 100, then s = ?
If `5/3`p + 9 = 24, then p = ______?
If 3c = c + 12, then c = ______?
If 3 (k + 1) = 24, then k = ______?
For riddle answer: substitute the number for the letter it equals
`()/1 ()/2 / ()/3 ()/4 ()/5 ()/6 ()/7 ()/8/()/4 ()/9`
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.
