When 2 resistors having resistances of R1 and R2 are connected in parallel across a supply   voltage of 60v,  the total power dissipation is 180w, but when they are connected in series   across the same supply voltage,  the total power dissipation becomes 40 W.  What are the   values of R1 and R2 ?

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When 2 resistors having resistances of R1 and R2 are connected in parallel across a supply

  voltage of 60v,  the total power dissipation is 180w, but when they are connected in series

  across the same supply voltage,  the total power dissipation becomes 40 W.  What are the

  values of R1 and R2 ?

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