Question

9. The mean (average) weight of three
students is 40 kg. One of the students Range
weighs 46 kg. The other two students, Rahism and Reshma have the same weight​

Answer 1

Answer:

let the weight of Rahism and Reshma = x

also given mean of three students weight = 40kg

one student has weight = 46kg

using formula,

Mean = sum of all observations/total number of observations

so, 40kg = 46+x+x ÷3

40 ×3 =46+2x

120 = 46+2x

or 2x= 120 - 46

2x= 74

x =74/2

x=37

hence, weight of Rahism amd Reshma are 37kg