Asked by Anonymous
The ratio of adults to girls to boys on a class field trip was 1:4:5. If the trip included 6 more boys than girls, how many adults were with the group?
A. 3
B. 4
C. 6
D. 8
E. 12
A. 3
B. 4
C. 6
D. 8
E. 12
Answers
Answered by
Reiny
adults --- x
girls ----- 4x
boys ------5x
(note x: 4x : 5x = 1 : 4 : 5)
"6 more boys than girls" ---> 5x = 4x+6
x = 6
so we had 6 adults, 24 girls, and 30 boys, (satisfying all our conditions stated)
girls ----- 4x
boys ------5x
(note x: 4x : 5x = 1 : 4 : 5)
"6 more boys than girls" ---> 5x = 4x+6
x = 6
so we had 6 adults, 24 girls, and 30 boys, (satisfying all our conditions stated)
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