2.
Texas Instruments technical mcq question, verified with a worked answer. Free to practise - no sign-up.
Meal prep techniques for busy schedules**
A study tested several meal prep techniques T1, T2, T3, T4 and T5 on how it made lives easier for college students and working individuals and the following statements were made:
Statements:
- T1 is twice as effective as T4 but less effective than T5.
- T2 is thrice as effective as T5.
- T3 is equally effective as T4.
Which of the following choices are true regarding the following conclusions that are drawn?
Conclusions:
- T5 has the highest efficacy.
- T4 and T5 have the least efficacy.
- T2 has the highest efficacy.
**
Show answer & explanation
T2 = 3T5 > T5 > T1 = 2T4 = 2*T3. This establishes that T2 has strictly the highest efficacy, confirming conclusion 3.
Step-by-step Derivation:
Step 1: Statement 1: T1 = 2T4 and T1 < T5.
Step 2: Statement 2: T2 = 3*T5.
Step 3: Statement 3: T3 = T4.
Step 4: Ordering: T2 = 3*T5 > T5 > T1 = 2T4 = 2*T3. T2 is strictly greatest.
Step 5: Conclusion 3 ('T2 has the highest efficacy') is guaranteed to follow.