Problema Solution
96 persons rode in buses to an elementary school picnic. there were 5 times as many parents as bus drivers; the number of boys was 3 times the number of parents; and there were 12 fewer girls than boys. how many bus drivers were there.
Answer provided by our tutors
Let
x = the number of bus drivers
5x = the number of parents
3*5x = the number of boys
3*5x - 12 = the number of firls
Since the total number of persons that rode in the the bus is 96 we have:
x + 5x + 3*5x + 3*5x - 12 = 96
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click here to see the equation solved for x
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x = 3 bus drivers
There were 3 bus drivers.