Advertisements
Advertisements
प्रश्न
Thrice a number decreased by 5 exceeds twice the number by 1. Find the number.
उत्तर
Let the number be x.
Then, thrice of this number = 3x and twice of this number = 2x.
If we decrease thrice of x by 5, we get (3x – 5)
According to the question,
(3x – 5) – (2x) = 1
⇒ 3x – 5 – 2x = 1
⇒ x – 5 = 1
⇒ x = 1 + 5 ......[Transposing (–5) to RHS]
⇒ x = 6
Hence, the required number is 6.
APPEARS IN
संबंधित प्रश्न
Set up equation and solve them to find the unknown number in the following case:
When I subtracted 11 from twice a number, the result was 15.
The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. What is the lowest score?
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?
Find a number, such that one-fourth of the number is 3 more than 7.
Sum of two numbers is 81. One is twice the other.
The equation formed is ______.
A number is 7 more than one-third of itself.
The sum of three consecutive integers is 5 more than the smallest of the integers. Find the integers.
150 has been divided into two parts such that twice the first part is equal to the second part. Find the parts.
The length of a rectangle is two times its width. The perimeter of the rectangle is 180 cm. Find the dimensions of the rectangle.
If one side of a square is represented by 18x – 20 and the adjacent side is represented by 42 – 13x, find the length of the side of the square.
