lilyparker12 lilyparker12

03-04-2020
Mathematics

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I'm really stuck on this question and if anyone could help me with it I'd be so grateful

Im really stuck on this question and if anyone could help me with it Id be so grateful class=

Respuesta :

amna04352 amna04352

03-04-2020

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

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