SOLUTION: Jonathon and members of his Spanish Club are going to Costa Rica over spring break. Before his trip, he purchases 10 travelers checks in denominations of $20, $50, and $100, totali

Question 159314: Jonathon and members of his Spanish Club are going to Costa Rica over spring break. Before his trip, he purchases 10 travelers checks in denominations of $20, $50, and $100, totaling $370. He has twice as many $20 checks as $50 checks. How many of each type of denomination of travelers checks does he have?
I do not understand how to make this into 3 algebraic equations. If someone could just ezplain that, i would appreciate that.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
t="$20 checks", f="$50 checks", and h="$100 checks"

"he purchases 10 travelers checks" __ t+f+h=10

"totaling $370" __ 20t+50f+100h=370

"twice as many $20 checks as $50 checks" __ t=2f
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