Question

8. 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?) ​

Answer 1

Answer:

As per the given conditions

The student had to multiply 7236 by 56

So 7236 x 56 ——(i) which is the correct one

But the student multiplied by 65

Sp 7236 x 65 ———(ii) which is the wrong one

Hence the difference between the correct and the incorrect value can be calculated by subtracting the two above obtained equations (i) and (ii). That is

7236 x 65 – 7236 x 56

Taking out 7236 as the common factor

=7236 (65-56)

=7236 (9)

= 7236 x 9

= 65124

Therefore the first answer was greater than the second one by the value 65124.

Answer 2

Answer:

Difference between 65 and 56=9

Difference in the answer=7236×9

7236

×9

_________

65124

_________

Therefore, His answer was greater than the correct answer by 65,124.

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