Find the amount in each case.

a) 8% is 56 kg.

can u set up cross multiplication for this?
8/100=x/56

a) 0.08 * 56 = ?

b) Yes. That's a ratio and can be corss-multiplied.

but why does the question say "8% IS 56"? why wouldn't it say 8% OF 56?

If it's saying "8% is 56" then your task is to find out what 100% is, I guess. So in that case, your ratio works.

If it said "8% of 56" then 56 would be the 100% and you'd need to multiply to find what 8% is.

oh ok that makes sense. thanks so much u 2 ur amazing!

Oops. I goofed. Sorry. My fingers got ahead of my brain.

I think the problem means that 8% of a number is 56 kg.

0.08 x = 56
x = 56 / 0.08
x = 700

thats ok everyobdy makes mistakes! :) ok ill try it that way.

Yes, we can use cross multiplication to find the amount in this case.

To set up the equation using cross multiplication, we first need to understand the relationship between the percentages and the amounts. We know that 8% represents a part of the whole, which is given as 56 kg.

So, we can set up the equation as follows:

(8/100) = (x/56)

Here, 8 is the percentage we want to find the amount for, 100 represents the whole, x is the unknown amount in kg, and 56 is the given amount.

To solve this equation, we can use cross multiplication:

(8/100) * 56 = x

Multiplying the numbers on the left side gives us:

(8 * 56) / 100 = x

Calculating further:

448 / 100 = x

x = 4.48

Therefore, the amount in this case is 4.48 kg.