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3rd Class Mathematics Calendar Question Bank Time and Calendar

  • question_answer
    Rory, the owner of Rory's Cookie Jar. Has to bake 12 large pans of chocolate chip cookies before he leaves for the day. He can bake two pans of cookies at a time. Rory knows that for perfect cookies each pan must bake for 15 minutes -no more. no less. If he starts baking at 5:45 p.m., what is the earliest he can close up shop?

    A) 7:30 pm          

    B)          7:15 pm  

    C) 7:45 pm          

    D)          7:20 pm

    Correct Answer: B

    Solution :

        Time taken by each pan to bake= 15 minutes. Number of pans cooked at a time = 2 Total number of pans = 12 Thus, Rory will have to take 6 rounds of baking his cookies if 2 pans are cooked simultaneously. And 6 pans X 15 minutes will take 1 hour 15 minutes. He starts at 5:45 pm so after 1 hour 15 minutes i.e at 7:15 he can close his shop after making all the cookies.


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