A body initially at 80^(@)C cools to 64^...

A body initially at `80^(@)C` cools to `64^(@)C` in 5 minutes and to `52^(@)C` in 10 minutes. What is the temperature of the surroundings?

`26^(@)C`

`49^(@)C`

`35^(@)C`

`42^(@)C`

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