KA KY Problem 6 Andre makes a trip to Mexico. He exchanges some dollars for pesos at a rate of 20 pesos per dollar. While in Mexico, he spends 9000 pesos. When he returns, he exchanges his pesos for dollars (still at 20 pesos per dollar). He gets back the amount he started with. 1 Find how many dollars Andre exchanged for pesos. (If you get stuck, try writing an equation representing Andre's trip using a variable for the number of dollars he exchanged.) S 10 Submit and Explain

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