Answer:
If the question is which is closest to 8, the answer is 61
Step-by-step explanation:
D might be the answer I am pretty sure it is D if not then sorry
Answer:
150
Step-by-step explanation:
Rate at which volume decrease:
(1 × 2 × 20/100) ÷ 30
= 1/75 m³/min
Total volume:
½ × (1.4 + 0.6) × 2 × 1
= 2 m³
Time = 2 ÷ 1/75
= 150 mins