Question

Find the average mean of 2/4, 18/5, 28/10, 5/20

Answer 1

2/4 + 18/5 + 28/10 + 5/20 = 143/20 (total)
143/20 ÷ 4 = 1 63/80

Ans: 1 63/80 or 1.7875

:)

Answer 2

Average mean of the fractions is
`1(63)/(80)`.

Explanation:

We have to find the average mean of the given fractions

`(2)/(4), (18)/(5), (28)/(10), (5)/(20)`

Since mean of numbers is represented by the expression

Mean =
`\frac{\text{Sum of fractions}}{\text{Number of fractions}}`

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

=
`((1)/(2)+(18)/(5)+(14)/(5)+(1)/(4))/(4)`

=
`((10+72+56+5)/(20))/(4)`

=
`(143)/(80)`

=
`1(63)/(80)`

Therefore, average mean of the fractions is
`1(63)/(80)`.