+936 A school orders $99$ textbooks, all for the same price. When the bill for the total order comes, the first and last digits are obscured. What are the missing digits?
_18,486.7_
+1233
A school orders $99$ textbooks, all for the same price.
When the bill for the total order comes, the first and last
digits are obscured. What are the missing digits?
_18,486.7_
What is the criterion for a correct answer? If we can get
a price per book that comes out even? What about that
the price of a book is a plausible amount? You decide.
518,486.76
–––––––––– = 5,237.24
99
.
+1233
A school orders $99$ textbooks, all for the same price.
When the bill for the total order comes, the first and last
digits are obscured. What are the missing digits?
_18,486.7_
What is the criterion for a correct answer? If we can get
a price per book that comes out even? What about that
the price of a book is a plausible amount? You decide.
518,486.76
–––––––––– = 5,237.24
99
.
+118670 Rather than using brute force Bosco you could have used this division fact
Divisibility rule of 11: This particular rule states that the given number can only be completely divided by 11 if the difference of the sum of digits at odd position and sum of digits at even position in a number is 0 or 11.
