Question
In a school, 40% of the students are girls, and 60% are
boys. Half of the boys are enrolled in class 12, while the remaining 840 boys are in class 10. What is the total number of girls in the school?Solution
ATQ;
Let total population = 't'
Boys = 60% of 't', Girls = 40% of 't'
50% of the boys are enrolled in class 12,
So, 50% are enrolled on class 10
Number of boys who enrolled in class 10 = 0.50 × (0.60T) = 0.30T
Given
0.30t = 840
Hence t = 840 ÷ 0.30 = 2800
Number of girls = 40% of 2800 = 1120
What is the direction of point O with respect to the point which is 6m south of point M?
Rohit travels 25m towards the east and then turns 90° to his right and travels another 4 m. Finally, he turns right and covers 25m. How far is he now f...
If point X is 13m north of point N, then what is the distance between point K and point X?
Mayank travelled westward 6 km , turned left and travelled 4kms, turned right and travelled 10kms. then he travelled north 4kms. How far he is from sta...
If U walks 18m towards the west and then takes a left turn of 24m then, what is the shortest distance between Q and U finally?
Find the shortest distance between Mall and Entry gate?
P # Q * C %W * U then find the distance between P and C?
if at point O the person starts walking to this west and walks for 9km reaches point A, then what will be the distance between point J and A?<...
Nikita walks 2kms towards West, turns right and walks 1 km. Again she turns right and walks 2 kms. She again turns right and walks another 2 kms. How fa...
What is the shortest distance between point M and point D?
