1. The problem statement, all variables and given/known data Resistor R1, R2, R3 are connected in parallel, have an equivalent resistance of 720(ohms). The currents are labeled I1, I2,and I3. I2 is 3x the value of I1, and I3 is 6x the value of I1. Calculate R1, R2, R3. 2. Relevant equations I used the parallel circuit equation. 1/RT=1/R1+1/R2..... 3. The attempt at a solution I tried to solve it like this.... 1/720= 1/R1+1/(1/3R1)+1/(1/6R1)---> 720=R1+3R1)+6R1-----> 720= 10R1-----> R1=72 ohms. I know I made a mistake or I have been following the wrong path. Please help I really don't understand this question. Thank You!