Answer :

__Given data:__

● Specific heat of substance A = c

● Specific heat of substance B = 2c

● Heat was given to substance A = Q

● Heat was given to substance A = 4Q

● Mass of A = m

__Calculation:__

The formula to calculate the heat energy given to body A is as follows.

Q = m×c×∆T …………. (1)

The formula to calculate the heat energy given to body B is as follows.

4Q = m_{B}×2c×∆T ……………. (2)

Divide equation (2) by equation (1).

or

or

m_{B} = 2m

The mass of substance B is **2m**.

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