Question
Vignesh bought 10 notebooks from the market and the cost was Rs.10 per notebook. Gautam got 7 notebooks of the same type.
A: Vignesh calculated the total amount like this: 10×10+10×7=Rs.170
B: Gautam calculated the total amount like this: (10+7)×10=Rs.170
Which of the method is correct?
Answer: Option A
:
A and B
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:
A and B
Total cost can be calculated as
By first calculating the cost of individual purchase of both Vignesh and Gautam and then adding them
i.e. 10×10+10×7=Rs.170
Or
First, calculate the total number of notebooks and then find the total cost
i.e. (10+7)×10=Rs.170
Hence, both the methods are correct.
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