Question

Mary wanted to add to her collection of model planes and trains. She wanted to add 5 model planes which cost $19 each and 3 model trains which cost $199 each. Which of the following is a good estimate of how much money Mary spent?

Answer 1

What are the options? But I think a good estimate is $700.

Answer 2

Spent = 5(19) + 3(199)
   = 95 + 597
Mary spent $692