1. The problem statement, all variables and given/known data Two friends A and B receive cups of coffee those are at equal temperature.A adds some cool cream immediately and takes his coffee 10minutes later.B waits for 10 minutes,and adds the same amount of cool cream and begins to take.Decide who takes hotter coffee? 2. Relevant equations 3. The attempt at a solution I cannot understand how should I use Newton's law of cooling here in this example.Please help me to start with.