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# The surface of a certain planet reflects 80 percent of the

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Manager
Joined: 10 Oct 2008
Posts: 56
The surface of a certain planet reflects 80 percent of the [#permalink]

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11 Nov 2008, 17:13
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?

A. 32%
B. 40%
C. 48%
D. 60%
E. 88%
Director
Joined: 14 Aug 2007
Posts: 704

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11 Nov 2008, 19:08
Jcpenny wrote:
The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?

A. 32%
B. 40%
C. 48%
D. 60%
E. 88%

C. 48 %

0.8 * (1 - 0.4) = 0.8 * 0.6 = 0.48 = 48%
Re: surface--27   [#permalink] 11 Nov 2008, 19:08
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# The surface of a certain planet reflects 80 percent of the

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