Can anyone help with this tension question for physics?

Can someone explain how to solve this physics question. You and two other people are mountain climbing and are roped together while ascending an ice field inclined at 21.0(degrees) to the horizontal. The last climber slips, pulling the second climber off his feet. The first climber, you is able to hold them both. If each climber has a m of 75kg, calculate the tension in each of the two sections of the rope between the three climbers. Ignore friction between the ice and the fallen climbers.