Each day ,Robert eats 40% of the pistachios left in his jar at that time.At the end of the second day,27 pistachios remain.How many pistachios were in the jar at the start of the first day?
Answer: 75
Explanation
Let the initial no. of pistachios ben.At the end of first day, remaining no.=60%×n=0.6nAt the end of second day, remaining no=60%×0.6n=0.36n0.36n=27⟹n=75Hence, 75 pistachios were in the jar at the start of the first day.
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