Find the mean (average) of the data set below? 2/4, 18/5, 28/10, 5/20

Question

asked Oct 9, 2019 72.4k views

1 Answer

ACNB · Answer 1 · 2019-10-15T15:09:09+0000

the mean (average) of the data set below

2/4, 18/5, 28/10, 5/20

We are given with 4 fraction

to find mean , we add all the fractions and divide by 4

Lets add all the fractions

(2)/(4) + (18)/(5) + (28)/(10) + (5)/(20)

Make the denominators same

LCM is 20

Try to get 20 in the denominator

(2*5)/(4*5) + (18*4)/(5*4) + (28*2)/(10*2) + (5)/(20)

(10)/(20) + (72)/(20) + (56)/(20) + (5)/(20)

(143)/(20)

Now we divide by 4

((143)/(20))/(4)=(143)/(80)=1(63)/(80)