Social & Preventive Medicine If a conraceptive has failure rate of 15, how many unplanned pregnancies will the female have in her reproductive period. A 3.5 B 4 C 4.5 D 5 💡 Explanation If a conraceptive has failure rate of 15, how many unplanned pregnancies will the female have in her reproductive period. ✓ Correct Answer: C. 4.5