Amy works 6 hours each day making one bracelet each hour. She sells the bracelets for $21 each. Yesterday she only worked of a day. How much can Amy earn from the bracelets she made yesterday?
Which answer gives the correct solution and explains how to check if the answer is reasonable?
A.
Solution: $84
Explanation: If Amy worked the whole day, then she would have made about 6 × $20 or about $120. Since Amy only worked of 6 hr, or 4 hours, she would make about $80 (4 × $20).
B.
Solution: $36
Explanation: Since Amy only worked of the day, she made about 2 × $20 or about $40.
C.
Solution: $252
Explanation: Since Amy only worked of the day, she earned about 2 × $20 or about $40. Since there are 6 hours in the work day, then Amy made about 6 × $40 or about $240.
