Four students each added salt crystals to water and measured the time it took for all the crystals to disolve. The following table shows their results.

Question

A three-column table, with column headers 'Student, 'Temperature (°C), 'and 'Time (sec).' For Marcus, the values are '10'and '65,' respectively. For Tyra, the values are '25' and '40,' respectively, For Luis, the values are '50' and '25,' respectively.' For Andrew the values are '75' and '15,' respectively.
Athena repeated the investigation using water heated to 40°C. Which is the time MOST LIKELY measured by Athena?
a) 10 sec
b) 20 sec
c) 30 sec
d) 50 sec

Answer 1

temps recorded/ times
10/65
25/40
50/25
75/15

Now at a temp of 40, time should be between 40 and 25 seconds, right?

Answer 2

So the answer would be C (30 sec), right?

Answer 3

20 sec

Answer 4

What is the mean of Joe's data?you may use the calculator

Answer 5

50