Three cars are driving on a racetrack. the mean speed of the three cars is 100 miles per hour. car x drives 109 miles per hour and car y drives 111 miles per hour. use the mean to estimate the speed of car z. then find the actual speed of car z.
estimate the speed of car z. choose the correct answer below.
a.
the speed of car z is about 100 miles per hour.
b.
the speed of car z is less than 100 miles per hour.
c.
the speed of car z is greater than 100 miles per hour.
d.
it is impossible to estimate the speed of car z.

Okay so n is going to represent our first number. since the second number of five times greater than n, the second number will be represented as 5n. for us to figure out the two  numbers we need to have  the value of n first. this is going to be done by adding the two numbers together, n and 5n. it can be simplified as 6n, which the problem states is equal to 72. divide 72 by 6n and you can solve for n.  n+5n=726n=72n=(72/6)n=12  now that we know the value of n, we have to multiply 5 times 12 which equals 60. so our two numbers/integers are 12 and 60