Exercise 3 Page 249

The percent equation is an equation in which the part is equal to the product of the corresponding percent and the whole. We can represent a is p percent of wwith the following equation. a= p% * wWe can find what percent of 600 is equal to 3 by substituting a= 3 and w= 600 into the formula and solve for p% using the Properties of Equality.

a= p% * w

SubstituteII

a= 3, w= 600

3= p% * 600

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Solve for p%

DivEqn

.LHS /600.=.RHS /600.

3/600=p% * 600/600

CancelCommonFac

Cancel out common factors

3/600=p% * 600/600

SimpQuot

Simplify quotient

3/600=p%

CalcQuot

Calculate quotient

0.005=p%

RearrangeEqn

Rearrange equation

p%= 0.005

Since 0.005 equals 0.5%, we can complete percent proportion. 3= 0.5% * 600 We found that 3 is 0.5 % of 600.