a group of 54 randomly selected students from one school district for participated in a survey. Out of the 54 students in the su
rvey, 9 are enrolled in band camp. If there are a total of 1200 students in the school district which estimate is reasonable for the number of students in the whole school district who are enrolled in the bank camp.
1 answer:
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Answer:
Step-by-step explanation:
Let the speed of faster plane be x
therefore ,
speed of slower plane = x - 20
As the time taken is same ,
therefore ,
faster plane travels at a speed of 190 miles/hr
while..
the slower plane travels at a speed = ( 190-20 ) miles/hr
=> 170 miles/hr
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