Here are the answers and walkthrough to Stupid Test Level 20 Question 18 – In a department store, with only one girl working on the gift-wrapping service, Four gifts per hour were wrapped in the First 15 hours. With help From a colleague For the next 45 hours, the amount of gifts wrapped rose to seven per hour. How many gifts were wrapped each hour in the last 45 hours only?
- 8=(15/4)+(45/7)then round up to 8
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