The ratio of boys and girls in the school is 5:7 and total number of students in the
school are 1440 then what is the number of boys ?
Answers
Answer:
1
Secondary School Math 5 points
The ratio of number of boys to the number of girls in a school of 1440 student is 7:5 . if 40 new boys admitted find how many girls admitted to make the ratio4:3
Ask for details Follow Report by Pratham87 18.11.2017
Answers
anurag0804rathore
anurag0804rathore Virtuoso
7x + 5x = 1440
X= 1440/12
X = 120
Boys = 7x = 840
Girls = 5x = 600
If 40 boys added
Boys = 880
Boys/ girls = 4/3
880 * 3/4 =girls
Girls = 660
4.2
49 votes
THANKS
64
Comments Report
usp488
usp488 Ace
Heyyy...
Your answer is here.
Let boys = 7x
and girls = 5x
so total = 12x
Total students before new addmission = 12x = 1440
x = 120
boys = 7x = 7×120 = 840
girls = 5x = 5×120 = 600
Now new students addimitted
boys = 840+40 = 880
girls = 600+g
and the given ratio = 4:3
880/600+g = 4/3
220/600+g = 1/3
600+g = 660
g = 660-600
g = 60
Thankyou Buddy...
please mark me brainliest and give thanks
Answer:
7x + 5x = 1440
X= 1440/12
X = 120
Boys = 7x = 840
Girls = 5x = 600
If 40 boys added
Boys = 880
Boys/ girls = 4/3
880 * 3/4 =girls
Girls = 660