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Q.

On a ‘X’ temperature scale, water freezes at 125.0 X and boils at 375.0X On a ‘Y’ temperature scale, water freezes at 70.0Y and boils at 30.0Y. The value of temperature on X-scale equal to the temperature of 50.0Y on Y-scale is 

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a

1375.0X

b

455.0X

c

1500.0X

d

125.0X

answer is C.

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Detailed Solution

Let θ= temperature  on X-scale corresponding to 50 on Y scale 

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θ(125)375(125)=50(70)30(70)

θ=1375X

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