Advertisements
Advertisements
प्रश्न
In a class of 60 students, the number of girls is one-third the number of boys. Find the number of girls and boys in the class.
उत्तर
As per the given information in the question, the total number of students in the class = 60.
Let x be the number of boys in the class.
Then, the number of girls in the class = `x/3`
According to the question,
`x + x/3` = 60
⇒ `(3x + x)/3` = 60
⇒ `(4x)/3` = 60
⇒ 4x = 60 × 3
⇒ 4x = 180
⇒ x = `180/4` = 45
Hence, the number of boys in the class is 45 and the number of girls in the class is `45/3` i.e.15.
APPEARS IN
संबंधित प्रश्न
Raju’s father’s age is 5 years more than three times Raju’s age. Find Raju’s age, if his father is 44 years old.
13 subtracted from twice of a number gives 3.
Mohan is 3 years older than Sohan. The sum of their ages is 43 years.
Two times a number increased by 5 equals 9. Find the number.
If 45 is added to half a number, the result is triple the number. Find the number.
In a bag, the number of one rupee coins is three times the number of two rupees coins. If the worth of the coins is ₹ 120, find the number of 1 rupee coins.
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.
Each of the 2 equal sides of an isosceles triangle is twice as large as the third side. If the perimeter of the triangle is 30 cm, find the length of each side of the triangle.
The sum of two consecutive multiples of 2 is 18. Find the numbers.
Look at this riddle?
If she answers the riddle correctly how ever will she pay for the pencils?
