Question

Select the equation that represents the question.

0.5% of what number is 12?
1. 12=0.005×w
2. 0.005=12×w
3. 0.005=w×12
4. w=12×0.005

Solve the equation

w=12

Answer 1

1. 12=0.005×w
2. the number is 2400

Explanation:

An appropriate representation of the problem can be had by using a variable to represent "what number" and then using the math equivalent symbols for the English words. If "what number" is represented by w, then we want to translate ...

0.5% of w is 12 . . . . English

0.005 × w = 12 . . . . . . . matches choice 1

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This can be solved by multiplying by 200

200(0.005w) = 200(12)

w = 2400

The number is 2400.