A 40g mixture at 100^(@)C is mixed in 15...

A 40g mixture at `100^(@)C` is mixed in 150g of cold water. The temperature of final mixture is `50^(@)C`. What was the initial temperature of cold water?

A

`36.66^(@)C`

B

`26^(@)C`

C

`25.6^(@)C`

D

`35^(@)C`

Verified by Experts

The correct Answer is:

A

Heat taken = given heat
`150 xx 1 xx (50-t)= 40 xx 1 xx (100-50)`
`rArr 750- 15t = 200`
`rArr 15t = 550`
`t= 36.66^(@)C`

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