Question

DIG DEEPER!

At a restaurant, when a customer buys 4 pretzels, the fifth pretzel is free. Soft pretzels cost $3.90 each. You order 12 soft pretzels. What is your mean cost per pretzel?

Answer 1

Step 1: At a restaurant, when a customer buys 4 pretzels, the fifth pretzel is free.

If you order 12 soft pretzels, so you will get 3 soft pretzels free and you have to pay for $12-3=9$ pretzels only

Step 2: Cost of one pretzels $=\$3.90$

Cost of 9 soft pretzels $=\$3.90\times 9=\$35.1$

Step 3: Mean cost per pretzels $=\frac{35.1}{12}$

Mean cost per pretzels $=\$2.925$

Hence, Mean cost per pretzels $=\$2.925$