For a class trip the teachers would like to have one of 1 teacher for every 10 students there are 190 students on the trip. How many adults should go on the trip ?
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1 teacher per 10 students = 1/10
Ratio (1:10)
for 190
x = number of teachers
1/10 = x/ 190
x= 190/ 10 = 19
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Answer
19 teachers (adults) should go on the class trip
