What is the total number of digits required in numbering the pages of a book, which has 1,724 pages?

Asmall car averages up to 29 more miles per gallon of gas that an suv. if a small car averages 44 miles per gallon, what is the average miles per gallon for an suv?

What is the ratio of the length of an object in yards to the length of the same object in miles?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.