Rates, SM-Bank 019 It takes Kate 15 seconds to place a brochure in an envelope and seal it. How many minutes will it take her to pack and seal 42 envelopes? (2 marks) Show Answers Only \(10.5\ \text{minutes}\) Show Worked Solution \(\text{Time}\) \(=42\times 15\) \(=630\ \text{seconds}\) \(=\dfrac{630}{60}\ \text{minutes}\) \(=10.5\ \text{minutes}\)