The ratio of students to teachers at a school is 19:1. how many students are there in each total number of people?
A. 100
B. 280
C. 440
D. 760
You spend 90 minitues practicing flip tricks and slides on your skate board. The ratio of time spent on flip tricks to time spent on slides is 7:8. How much time do you spend practicing slides?
I just need help! Thanks.
For every 20 people 19 are students and 1 is a teacher.....or 19/20 are students
A 100 x 19/20 = 95 students
B etc etc
8 out of 15 ( 7 + 8) is time in slides
8/15 x 90 minutes = time spent in slides.....
For every 20 people 19 are students and 1 is a teacher.....or 19/20 are students
A 100 x 19/20 = 95 students
B etc etc
8 out of 15 ( 7 + 8) is time in slides
8/15 x 90 minutes = time spent in slides.....
So for the first would it be b?
So the second one would be 48 minutes right?
48 min is correct for the second one
First one :
If the ratio of students to teachers is 19 : 1.......then out of 20 people...19 are students....so
19 / 20 = 95% are students = .95
So......the number of students in each case [ in red ] is
A = .95 * 100 = 95
B = .95 * 280 = 266
C = .95 * 440 = 418
D = .95 * 760 = 722