Question

the average weight of 7 cricket player is 80kg if two player of the same weight left the team the new average of tge remaining 5 player become 78 kg what weight of the two player who left the team

Answer 1

Answer:

85kg

Step-by-step explanation

sum of their weights = 80 x 7=560kg

560-2x/5 = 78

560-2x = 78 x 5

560 - 390 = 170 = 2x

x = 170/2 = 85kg

Answer 2

Answer:

let the total no. of students be= x

so,x/7=80kg

hence x=7 *80=560

total wt. of the students=560

let the wt. of the 2 Students who left be equal to 2y

now the new avg. is x-2y/7-2=78

560-2y/5=78

560-2y=390

2y=170

y=85

hence , wt. of each student who left is 85kg