A body cools in 7 minute from 60^(0)C to 40^(0)C. Temperature after the next 7 minutes is 7x. Find .x.. (The temperature (in degree) of surrounding is 10^(0)C).

A body cools in 7 minute from 60^(0)C to 40^(0)C. Temperature after th

1.	A body cools in 7 minute from 60^(0)C to 40^(0)C. Temperature after the next 7 minutes is 7x. Find .x.. (The temperature (in degree) of surrounding is 10^(0)C).
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