Question

Answer the question step by step​

Answer 1

An average =

total sum of the observations / total no. of observations

in this case,

no. of observations= 3

sum of observations = 4/5 + 2/3 + 5/6

LCM of denominators = 30

thus,

4×6 + 2×10 + 5×5 / 30

=> 24 + 20+ 25/ 30

=> 69 /30

average =( 69/30) / 3 = 69/30 × 1/3 = 23 /30

Answer 2

Step-by-step explanation:

common denominator which is 30.

so,we have 24/30,20/30,and 25/30.

which equals 69/30.

divide by 3.and

you get 69/90.

which is 23/30