SSAT Upper Level Math : How to solve arithmetic word problems
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Example Questions
Example Question #1071 : Ssat Upper Level Quantitative (Math)
Bill decides to donate 15% of his $4000 and Ted decides to donate 25% of his $8000. What percentage of their combined fortunes do Bill and Ted donate?
21.7%
20%
23.1%
22.3%
19.2%
21.7%
This is a simple problem, so long as you don't forget that Bill and Ted have different amounts of money, so you can't simply average 15% and 25% to get 20%.
Calculate how much each donates:
4000(.15)= 600
8000(.25)= 2000
Now divide the total donation by their total wealth:
Now multiply this answer by 100, and then round to the nearest tenth to get 21.7%.
Example Question #2 : How To Do Distance Problems
Joe drove an average of 45 miles per hour along a 60-mile stretch of highway, then an average of 60 miles per hour along a 30-mile stretch of highway. What was his average speed, to the nearest mile per hour?
At 45 mph, Joe drove 60 miles in 
At 60 mph, he drove 30 miles in 
He made the 90-mile trip in 
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