Question

the average marks of 10students are 40. if 5 marks are added to 5 students and 2 marks added to remaining 5 stdents the new average is....​

Answer 1

Answer:

43.5

Step-by-step explanation:

let the sum of the marks of the 10 students be'x'.

X/10=40

X=400

if 5marks are added to 5 students 2 marks are added to remaining 5 students

then total marks of 10 students is 400+5*5+5*2

=400+25+10

=435

new average=435/10

=43.5

Answer 2

Step-by-step explanation:

this is the process for this problem