Correct answers only please!

A monitor with a screen dimension ratio of 20:4 is playing a video image with a dimension ratio of 9:2 at its fullest size which left a pillar-boxed image. What percent of the screen’s area is occupied by the image?

A. 80%

B. 85%

C. 90%

D. 95%

Since the full height of the screen is used, we can find the desired fraction by finding the ratio of the width/height aspect ratio of the image to the screen.

((image width)/(image height)) / ((screen width)/(screen height))

= (9/2)/(20/4) = 18/20 = 9/10 = 90%

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second question

For each of the 10 first digits, 9 second digits are allowed. For each of those, 9 third digits are allowed. The total number of available combinations is ...

10 × 9 × 9 = 810

Correct answers only please!A monitor with a screen dimension ratio of 20:4 is playing a video image with a dimension ratio of 9:2 at its fullest size which left a pillar-boxed image. What percent of the screen’s area is occupied by the image?A. 80%B. 85%C. 90%D. 95%

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Correct answers only please!

A monitor with a screen dimension ratio of 20:4 is playing a video image with a dimension ratio of 9:2 at its fullest size which left a pillar-boxed image. What percent of the screen’s area is occupied by the image?

A. 80%

B. 85%

C. 90%

D. 95%