A. 83.3
B. 90
C. 80
D. 70
Answer & Solution
Answer: The correct answer is 83.3 students.
Solution:
Let x be total students in a class.
If there are 70% girls in class, it means 30% are boys.
we can write it as:
⇒ 30% of students in class = 25 boys
The equation will be:
⇒ \frac{30}{100}\times x\ =\ 25
Keep the x on left side, and bring other value to right side
it will become,
x\ =\ \frac{25\times100}{30}
x\ =\ \frac{5\times100}{6}
x\ =\ \frac{500}{6}
x=\ 83.3
Hence, There are total 83.3 students in the class.
Solution:
Let x be total students in a class.
If there are 70% girls in class, it means 30% are boys.
we can write it as:
⇒ 30% of students in class = 25 boys
The equation will be:
⇒ \frac{30}{100}\times x\ =\ 25
Keep the x on left side, and bring other value to right side
it will become,
x\ =\ \frac{25\times100}{30}
x\ =\ \frac{5\times100}{6}
x\ =\ \frac{500}{6}
x=\ 83.3
Hence, There are total 83.3 students in the class.
