Question

You are downloading a song. The percent y (in decimal form) of megabytes remaining to get downloaded in x seconds is given by y = – 0.1x + 1 after how many seconds will 75% of the song gets downloaded?

Answer 1

When 75% of a song gets downloaded 25% remains.

In other words y = 25%

y = 0.25

By using the equation we get

0.25 = – 0.1x + 1

0.1x = 0.75

x = `0.75/0.1` = 7.5 seconds