Gloria has five times as many dimes as quarters in her graduation money. She decides to put 2/5 of the quarters aside for future use. If she has 350 dimes, calculate the combined number of quarters and dimes she has after putting aside 2/5 of the quarters? Give me reasons, before answering the question
If the number of dimes is 20 times the number of quarters, she has 350 / 5 = 70 quarters. When she puts 2 / 5 of the quarters away, the number of quarters reduces by 2 / 5 * 70 = 28. She's now left with 70 - 28 = 42 quarters. In total, she has 42 quarters + 350 dimes = 392. So the final answer is 392.