Question: A biodegradable polymer when implanted in a rat losses 40% of its tensile strength in 10 days and 50% of its tensile strength in 20

A biodegradable polymer when implanted in a rat losses 40% of its tensile strength in 10 days and 50% of its tensile strength in 20 days. How many days will it take to loose 60% of its strength?

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