Question

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%

Answer 1

c

Explanation:

Ratios are same as fractions so we use screen dimension ratio to be equal to 100% then we find the ratio of the video image

20=100% therefore what about 9

4. 2

you get 90%.

Answer 2

• C. 90%
• 810

Explanation:

first question

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%

__

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