Dave breaks 2 guitar strings per night when playing live. If he performs 6 shows a week for 12 weeks, how many guitar strings will he need to replace? Let's think first. Chain of thought:
He breaks 2 strings a night for 6 nights for a total of 2 * 6 = 12 broken strings. He breaks 12 strings per week so over 12 weeks, he will need to replace 12 * 12 = 144 guitar strings.
Therefore, the answer is 144.