Question

Four chimes ring simultaneously at 5:30 a.m. After that, they ring at the intervals of 15 seconds, 20 seconds, 25 seconds and 30 seconds, respectively. How many times will these chimes ring together till 8:15 a.m., including at 5:30 a.m.?

• A. 32
• B. 34
• C. 31
• D. 33

Answer 1

Answer:

B. 34