If the least common multiple of N and Z is 15, which of the following is a common multiple of N and Z? Answers:
105
35
65
92

Last saturday, the museum box office sold 281 tickets for a total of $3,954. adults ticket cost $15, and students ticket cost $12. how many of each kind of tickets were sold?

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.