How is the heat conducted by bar 1 compared to bar 2?

[Cozey]

Homework Statement

Two bars are placed between plates whose temperatures are Thotand Tcold . The thermal conductivity of bar 1 is six times that of bar 2 (k1 = 6k2), but bar 1 has only one-third the cross-sectional area (A1=1/3 A2 ). Ignore any heat loss through the sides of the bars. Which statement below correctly describes the heat conducted by the bars in a given amount of time?

Homework Equations

The Attempt at a Solution

Bar 1 conducts twice the heat as does bar 2; Q1 = 2Q2 is the answer but how??

 

[mfb]

You missed section 2 in the homework template which gives the answer: You should have a formula for heat conduction in your textbook/script where you can just plug in values.