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  4. On a hypothetical scale X, the ice point is 40° and the steam point is 120°. For another scale Y, the ice point and steam point are -30° and 130° respectively. If X reads 50°, then Y would read :

Q. On a hypothetical scale , the ice point is and the steam point is . For another scale , the ice point and steam point are and respectively. If reads , then would read :

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Solution:

We use




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