Baking muffins

Aunt Polly is baking muffins at a speed of 4 muffins per minute. Tom comes into the kitchen when Aunt Polly has 12 muffins, and begins to eat these muffins at a speed of 6 muffins per minute. When he finally leaves the kitchen, there are 4 muffins at the table. How long did Tom stay in the kitchen?

Correct result:

t =  4 min

Solution:


12 + 4•t - 6•t = 4

2t = 8

t = 4

Calculated by our simple equation calculator.



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