Answer: Tyrone has 28 mystery novels.
Step-by-step explanation:
Divide 42 by 3 to get 1/3 of the books he has.
42/3 = 14
14 * 2 = 28
28 = 2/3 of his books
Answer:9+10 is 19
1+1 is 2
2+2=4
9 * 9 is 81
12 * 12= 144
last one not sure
