Question

Anyone knows how to do this? Thanks

Answer 1

a : b : c =
`(1)/(3) :1:(1)/(2)`

Explanation:

Given:
`(1)/(a) :(1)/(b) :(1)/(c) =3:1:2`, find a : b : c.

First, find a.

To find a write the equation down.

`(1)/(a) =3`

Then calculate. Using crisscross multiplication, find a.

3a = 1 (Divide both sides by 3)

a =
`(1)/(3)` = 0.333

Then find b.

To find b write the equation:

`(1)/(b) =1`

Then, using crisscross multiplication:

b = 1

Finally, find c.

Write the equation:

`(1)/(c) =2`

Using crisscross multiplication:

2c = 1 (Divide both sides by 2)

c =
`(1)/(2)` = 0.5

Therefore, a : b : c =
`(1)/(3) :1:(1)/(2)`