Ana tinha um recipiente que, cheio de leite, pesava 1,2kg. após consumir 3/5 do leite desse recipiente, ela verificou que restava 840g. qual será o peso desse recipiente quando restar apenas 1/3 de leite?

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;