Discussion

Explanation:

Milk at the end of Monday is 600 liters and at the start of Tuesday is 400 liters.

⇒ The milk thrown away on Tuesday is 600 – 400 = 200 liters.  

This is the spoilt milk which was produced on Monday. Hence, the consumable milk produced on Monday is 600 – 200 = 400 liters.

Half of this 400 liters consumable milk will be thrown away on Wednesday i.e. 200 consumable milk will be thrown away on Wednesday.

Total milk thrown away on Wednesday = 760 – 400 = 360. 200 liters of this is consumable milk produced on Monday and rest 360 – 200 = 160 liters is the spoilt milk produced on Tuesday.

Total milk produced on Tuesday = 760 – 400 = 360 liters.

∴ Consumable milk produced on Tuesday is 360 – 160 = 200 liters.

Similarly, we can complete the entire table till Friday.

​​​​​​​

∴ Total consumable milk produced till Thursday = 400 + 200 + 100 + 120 = 820 liters.

Hence, option (d).

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