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To solve problems that involve percent, use the percent equation.
Equation: 84 = 0.75* w
Solution: w = 112
Let's start by recalling that we can use the percent equation to solve problems that involve percent.
Percent Equation [0.3em]
part = percent * whole
In this case, we want to find the number of which 75 % is 84, which means that we want to find the whole. Let w represent the whole.
We got that 75 % is equal to 0.75. 84 = 75 % * w [0.3em] ↓ [0.3em] 84 = 0.75 * w Finally, let's solve the equation for w. To do so, we will use the Division Property of Equality.
.LHS /0.75.=.RHS /0.75.
Cancel out common factors
Simplify quotient
Use a calculator
Rearrange equation
We found that w= 112 is a solution to the equation. This means that 84 is 75 % of 112.