Problema Solution
4.During a 4th of July weekend, 32 vehicles became trapped on the Sunshine Skyway Bridge while it was being repaved. A recent city ordinance decreed that only cars with 4 wheels and trucks with six wheels could be on the bridge at any given time. If there were 148 tires that needed to be replaced to due to damage, how many cars and trucks were involved in the incident?
Answer provided by our tutors
let and
since there were , we have
cars have so , trucks have so
the of wheels is , so
set up an equation system and solve it:
multiply the top equation by to get rid of and solve for :
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so trucks and cars were involved
check: