Three percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.7 × 10'(of her skin cells were burned then, how many skin cells were not burned?

Answer 1

This is a percent question, where percent is defined as part divided whole times 100. In this case, the part is the number of skin cells that were burned (3.7*10^1 = 37) and the percent is 3%.

Now we just have to set up the equation

3% = (37 / X) * 100%

we can move the 100% to the left side by dividing both sides by 100%

3% = 37

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100% X

to make things easier, we can divide 3 by 100 = 0.03

0.03 = 37

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X

now we can multiply both sides by X

0.03 * X = 37

dividing both sides by 0.03 will allow us to solve the equation

x = 37/0.03 = 1233