The ratio of children to adults at a baseball game is 2 to 5. If there are 7,200 children at the game, which of the following could not be used to determine the number of adults, a?

2/5=7200/a
2/a=5/7200
7200/2=a/5
a/7200=5/2

Question

The ratio of children to adults at a baseball game is 2 to 5. If there are 7,200 children at the game, which of the following could not be used to determine the number of adults, a?

2/5=7200/a
2/a=5/7200
7200/2=a/5
a/7200=5/2

anonymous · Answer

the first one cannot be used

anonymous · Answer

no - i think that one can be used
if we cross multipky
2a = 5* 7200
a = 5*7200 / 2

anonymous · Answer

which would give you like 18,000 adults

anonymous · Answer

yup  adults are in majority

anonymous · Answer

i read the question wrong...i thought it was 7200 total people at the game

anonymous · Answer

for every 2 children there are 5 adults

anonymous · Answer

oh ok

anonymous · Answer

so then yea...it's the 2nd equation that can't be used

anonymous · Answer

yup - 2nd one