Explanation
Let the number be x
According to the question,
91 -
30x100" role="presentation" style="outline: none; margin: 0px; padding: 0px; border: 0px; font-variant: inherit; font-stretch: inherit; line-height: normal; font-family: inherit; vertical-align: baseline; display: inline; text-align: inherit; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative; color: rgb(0, 0, 255);">30x100
= x
9100 - 30x = 100x
Or, 9100 = 130x
Or, x =
9100130" role="presentation" style="outline: none; margin: 0px; padding: 0px; border: 0px; font-variant: inherit; font-stretch: inherit; line-height: normal; font-family: inherit; vertical-align: baseline; display: inline; text-align: inherit; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative; color: rgb(0, 0, 255);">9100130
Hence, x = 70