Math, asked by nikhil3034547, 9 months ago

The average marks obtained by the students in a class are 43. If the average marks
obtained by 25 boys are 40 and average marks obtained by the girl students are 48, then
what is the number of girl students in the class?
| एक कक्षा में विद्वार्थियों ने 43 औसत नम्बर प्राप्त किये। यदि 25 लड़कों द्वारा 40 औसत
नम्बर प्राप्त किये गये हैं और लड़कियों द्वारा 48 औसत नम्बर प्राप्त किये गये हैं, तो बतायें कि
कक्षा में कितनी छात्रायें हैं?
(a) 20 | (b) 25 (c) 15 (d) 10​

Answers

Answered by sarusandy13gmailcom
0

Answer:

15

Step-by-step explanation:

the average marks obtained by boys=

b/25= 40

b=40*25 ––––(1)

the average marks obtained by girls =

g/x =48

g= 48 *x–———(2)

the average marks obtained total students=

g+b/x+25 =43———(3)

sub 1&2 in 3

we get no. of girls x=15.

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