Multiplying percents

• Only 95.7% of the light arrived at the back surface. So, 4.3% of 95.7% reflected from the back surface.

• To multiply, reconvert one number to decimal and multiply:

4.3% = 0.043

95.7 x 00.043 = 4.1%

4.1% of the original light reflects from the back surface.

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