A math question......

[RStar]

Math is not my best subject (only second worst to spelling!).

I'm going nuts trying to figure out how to do this.

How do I figure what % of 7 is 4.8?

It seems so simple, yet.......

[blueerica]

I think it's 68.57%. You should be able to just divide 4.8 by 7.

[blueerica]

I also am a heavy user of the cross-multiply and divide technique, which is a way I tend to represent "this is to this as that is to that" mathematically. So, you could cross-multiply 4.8 and 100 to get 480. Then divide that by 7 which equals the same thing I told you earlier. Sort of a 4.8 is to 7 as X is to 100 set up.

I think I made that more complicated than it needed to be.

[Ghoulish Delight]

Percentage couldn't be easier.

To find what percent A is of B:

A/B * 100

[RStar]

Originally Posted by Ghoulish Delight

Percentage couldn't be easier.

To find what percent A is of B:

A/B * 100

That's what I thought, but I was forgetting to multiply by 100 and wasn't sure if the 0.6857 was truley 68.57%.

Thanks guys, I knew I could count on you.

[BarTopDancer]

Originally Posted by blueerica

I also am a heavy user of the cross-multiply and divide technique, which is a way I tend to represent "this is to this as that is to that" mathematically. So, you could cross-multiply 4.8 and 100 to get 480. Then divide that by 7 which equals the same thing I told you earlier. Sort of a 4.8 is to 7 as X is to 100 set up.

I think I made that more complicated than it needed to be.

Brain melting.

[Kevy Baby]

Originally Posted by blueerica

I think I made that more complicated than it needed to be.

Yep!

[Drince88]

Originally Posted by blueerica

I think I made that more complicated than it needed to be.

Yes - but you did make me smile. My Mom's theory of practical math is that everything that isn't simple arithmetic can be expressed in a ratio problem. And I've found very few examples where that wasn't true. Most of what I do know is making units cancel, which is another way of looking at ratios!

[Cadaverous Pallor]

Originally Posted by blueerica

Sort of a 4.8 is to 7 as X is to 100 set up.

I totally use this method. It's the only way I can remember the relationships. It takes a few steps but it's always right

[Kevy Baby]

Originally Posted by Cadaverous Pallor

I totally use this method. It's the only way I can remember the relationships. It takes a few steps but it's always right

Maybe I am missing something, but I always believe it is better to KISS (Keep It Simple Stupid*). By adding steps, you introduce additional opportunities to make a mistake.

In the grand scheme of things, it doesn't matter all that much though.




* No, I am not calling anyone stupid: it is just the acronym