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.
Advertisements
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
Set up equation and solve them to find the unknown number in the following case:
Add 4 to eight times a number; you get 60.
Set up equation and solve them to find the unknown number in the following case:
One-fifth of a number minus 4 gives 3.
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?
The length of a rectangle is two times its breadth. Its perimeter is 60 cm.
Perimeter in terms of x is ______.
If 10 is subtracted from half of a number, the result is 4.
9 added to twice a number gives 13. Find the number.
After 25 years, Rama will be 5 times as old as he is now. Find his present age.
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.
Follow the directions and correct the given incorrect equation, written in Roman numerals:
Remove two of these matchsticks to make a valid equation:
The three scales below are perfectly balanced if • = 3. What are the values of ∆ and * ?
| a. |  |
| b. |  |
| c. |  |
