Question

A student multiplied 8035 by 87 instead of 78. By how much was his answer greater than or less than the correct answer?

Answer 1

Step 1: Finding the correct and wrong answers

Wrong answer = 8,035 $\times$ 87 = 6,99,045
Correct answer = 8,035 $\times$ 78 = 6,26,730

Step 2: Finding the Difference between obtained answers

Wrong answer is greater than correct answer by = 6,99,045 - 6,26,730 = 72,315
Thus, his answer was 72,315 greater than correct answer.