问一个问题！

Xiaotongdi

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，80%*60%

我想知道，如果1- 80%*40%是不是说的就是既没有反射也没有被吸收的呢？

sdcar2010

No.

1- 80%*40% is the amount NOT absorbed by the clouds.

Xiaotongdi

那岂不是和题目说的一样了？

sdcar2010

No.

The question asks for the amount which is reflected from the surface but not being absorbed by the clouds: 80%*(1-40%).

sdcar2010

The 20% not being reflected is also not being absorbed by the clouds: 20%+48% = 68%