hi there!
question 1 answer: p/q can be terminating when q = 5^m * 2^n
question 2 answer: -1 and -1
question 3 answer: -4
question 4 answer: 5/12
hope this : )
6 adults and 9 children went.
a + c = 15
12a + 9c = 153
12(6) + 9(9) = 153
72 + 81 = 153