Question

the average of n numbers is decreased by 1.5,when 3/4th numbers are reduced by 5 each and 1/4th numbers are incresed by m. Find the value of m

Answer 1

Answer:

9

Step-by-step explanation:

• avg(t1+ t2+.... tn) -1. 5=avg ( (t1-5), (t2-5),..... +(t 3n/4-5) +.....( t n+m)
• avg-1. 5=avg -3*5/4+m/4
• m/4=15/4-1.5
• m=9