posted by Chelsea on .
For whatever reason I'm drawing a huge blank on this problem.
Shane returned from a trip to Las Vegas with $300.00, which was 50% more money than he had at the beginning of the trip. How much money did Shane have at the beginning of his trip?
x = beginning amount
300 = 1.5 x
because 50% more = 100% + 50% which is 1.5
Put x over one and find the common denominator so that it can be added with x over 2. The common demoninator would be two. The new equation will be 2x/2+x/2=300.
Combine like terms so that the equation is 3x/2=300
then cross multiply. The equation will now be 600/3=300x/1