Options:
A.
B.
C.
D.
Sign in to view the correct answer and detailed explanation.
Study with fewer interruptions on Android
Use Ulearngo on a verified device for smoother past-question study.
Ulearngo is an independent study app. It is not affiliated with, endorsed by, or representing Joint Admissions and Matriculation Board (JAMB). Always confirm official exam, admission, registration, syllabus, timetable, and result information from JAMB official website.
Earlier discussion
2 older comments kept for context.
Sanni Rasheed Babatunde
\(E = \cfrac{\text{work output}}{\text{work input}} \times 100\%\)
\(\cfrac{250 \times 30}{250 \times 30 + 1500} \times 100\)
\(= 0.833 \times 100 = 83.3\%\)
Oluwaseun Adeyemi
Y = \(\frac{work output}{work input} \times \frac{150}{1}\)
Y = \(\frac{250 \times 30}{250 \times 30 + 1500} \times \frac{150}{1}\)