TITLE: how many fewer grames of caffeine is she consuming each week?
QUESTION [1 upvotes]: how many fewer grames of caffeine is she consuming each week?
I try with the following 
2*97*7 + 5 * 6 *7 = 1358 +210 = 1568 mg convert to gram = 1.568
but not correct , please help how calculate ??

REPLY [3 votes]: You are looking for the difference, not the sum.
{"set_name": "stack_exchange", "score": 1, "question_id": 1194306}