two secretaries each have 300 letters to type. one can type 15 letters an hour, while the second can do 13 letters an hour. at the time the first typist finishes the job, how many more letters does the second typist have to finish?
Two secretaries each have 300 letters to type. One can type 15 letters an hour, while the second can do 13 letters an hour. At the time the first typist finishes the job, how many more letters does the second typist have to finish?
Answer:
The first typist can type 15 letters per hour, so to complete 300 letters, the first typist would take 300 / 15 = 20 hours to finish the task. Meanwhile, the second typist can type 13 letters per hour. In 20 hours, the second typist would type 20 * 13 = 260 letters.
Therefore, when the first typist finishes all 300 letters, the second typist would have 300 - 260 = 40 more letters to type to complete the task. So, the second typist would have 40 letters left to type by the time the first typist finishes.