Question

Ann runs a small coffee shop. Café lattes are by far her biggest seller. She can prepare 50 lattes, each requiring two minutes, if she spends 15 minutes preparing the coffee ahead of time and making sure she has all of her other supplies and ingredients well stocked and ready to use. How long does it take Ann to prepare the 50 lattes so that she can serve her customers?

	a.	100 minutes
	b.	110 minutes
	c.	115 minutes
	d.	None of the above

Answer 1

Select - (c) ......... 115 minutes

Without preparing coffee lattes cannot be prepared. Hence 15 minutes work is a prerequisite before the work of latte is started.

There after for 50 lattes @ 2 minutes per latte = 100 minutes are needed

Thus, Total time needed = 15 + 100 = 115 minutes