1990 AJHSME Problems/Problem 24
Problem
Three 's and a will balance nine 's. One will balance a and a .
How many 's will balance the two 's in this balance?
Solution
For simplicity, suppose , and . Then, and we want to know what is in terms of . Substituting the second equation into the first, we have
Thus, we need 's .
See Also
1990 AJHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 23 |
Followed by Problem 25 | |
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