Answers

1. The constant of proportionality for each conditions are 3 and 2 respectively.

   What is Proportional?

   Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.

   Given that;

   Jimmy reads 15 pages in 5 minutes.

   And, Carlo reads 12 pages in 6 minutes.

   Now,

   For first condition,

   Jimmy reads 15 pages in 5 minutes.

   So, The constant of proportionality = 15 / 5

                                                   = 3

   And,  For second condition,

   Carlo reads 12 pages in 6 minutes.

   So, The constant of proportionality = 12 / 6

                                                         = 2

   Thus, The constant of proportionality for each conditions are 3 and 2 respectively.

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2. Answer:

   Jimmy has a ratio of 1:20, or 1 page:20 seconds. Carlo has a ratio of 1:30, or 1 page:30 seconds. Jimmy reads at a faster pace than Carlo, as he is able to read a page in 2/3 of the time it takes Carlo.

   Step-by-step explanation:

   Jimmy reads a page, on average, every 20 seconds.

   5 × 60 = 300

   300/15 = 20

   therefore, one page every 20 seconds

   1:20

   Carlo reads a page, on average, every 30 seconds.

   6 × 60 = 360

   360/12 = 30

   therefore, one page every 30 seconds

   1:30

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