Monica spent 5/8 hours listening to tapes of Beethoven and Brahms. She spent 2/7 hours listening to Beethoven. How many hours were spent listening to Brahms?
First, we need to find the total amount of time Monica spent listening to tapes of Beethoven and Brahms:
5/8 hours = (5/8) / 1 = 5/8 hours
2/7 hours = (2/7) / 1 = 2/7 hours
Total time = 5/8 + 2/7
To find a common denominator, we can multiply 8 and 7 to get 56:
(5/8 * 7/7) + (2/7 * 8/8)
= 35/56 + 16/56
= 51/56 hours
Now, we need to find out how many hours Monica spent listening to Brahms. Since Monica spent 2/7 hours listening to Beethoven, she spent the remaining time listening to Brahms:
Total time - time spent on Beethoven = time spent on Brahms
51/56 - 2/7
To find a common denominator, we can multiply 8 and 7 to get 56:
(51/56) - (16/56)
= 35/56 hours
Therefore, Monica spent 35/56 hours listening to Brahms.