A student multiplied 7236 by 65 instead of multiplying by 56 . By how much was his answer greater than the correct answer? (Hint: Do you need to do both the multiplications?)

Given: 

A student multiplied 7236 by 65 instead of multiplying by 56.

To do: 

We have to find by how much his answer was greater than the correct answer.

Solution:

The result obtained by multiplying 7236 with 65 $=7236\times65$

The result obtained by multiplying 7236 with 56 $=7236\times56$

Therefore,

The difference between the correct and incorrect answer $=7236\times65-7236\times56$

$=7236(65-56)$

$=7236\times9$

$=65124$

Hence, his answer was greater than the correct answer by 65124.

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Updated on: 10-Oct-2022

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