There are three bells that ring at intervals of 10, 12, and 15 seconds, respectively. Assume the three bells have just rung simultaneously. How much time will pass before the next time that happens?
PARCC Practice Tests and Online Assessments - Grade 5 Math (2016-17)
Real World Problems 5.NBT.B.5There are three bells that ring at intervals of 10, 12, and 15 seconds, respectively. Assume the three bells have just rung simultaneously. How much time will pass before the next time that happens?