Gerard had thrice as much money as Adam at first. 

Then, Adam spent $ 11.80 on food. 

If Gerard has $73.40 more than Adam now,

(a) how much money does Gerard have now?

(b) what is the average amount of money Gerard and Adam have now?

Notes to students:

1.    If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12

      2 .   Round your answer off to 2 decimal places