Question

3/10n=4/5. What value of n makes this equation correct

Answer 1

using property of proportion
3*5=4*10n
n=(3*5)/(4*10)=(3)/(4*2)=3/8=0.375

Answer 2

The given equation is

`(3)/(10n) = (4)/(5)`

We have to solve for n .

We start with cross multiplication, and on doing so, we will get

`3*5 = 4*10n`

`15= 40n`

Dividing both sides by 40

`image`

And that's the value of n , which makes the given equation correct .