Problema Solution
A research group surveyed 8,156 children ages 5 to 14 who were riding bicycles. Approximately
2
5
of the children were wearing helmets, and of those, only
13
20
were wearing the helmets correctly. About how many of the children were wearing helmets correctly? (Round your answer to the nearest whole number. Do not round until the final answer.)
Answer provided by our tutors
2/5 of 8,156 children were wearing helmets
13/20 of the above number were wearing the helmets correctly
(13/20)*(2/5)*8156 = 2,121 children approximately were wearing the helmets correctly.