Answer:
B. 90; 100 is a reasonable estimate
Explanation:
15 + 14 = 29 (combined number of stamps Julissa and Ethan have)
Pawel has three times 29 stamps
29 ×3 = 87 (number of stamps Pawel has)
90 is the closest estimate to the amount of stamps Pawel has.
Therfore, 90 is the correct estimate and 100 is a reasonable estimate.