Two heaters X and Y are connected is parallel across the supply of V volts. Heater X generates 500 kCal of heat in 20 minutes while Y generates 1000…

Two heaters X and Y are connected is parallel across the supply of V volts. Heater X generates $\displaystyle 500$ kCal of heat in $\displaystyle 20$ minutes while Y generates $\displaystyle 1000$ kCal in $\displaystyle 10$ minutes. The resistance of heater X is $\displaystyle 10 \Omega$. If these heaters are connected in series across the same voltage, then the heat produced in $\displaystyle 5$ minutes will be \_\_\_\_ kCal.