math
posted by Braden on .
A 4digit number. The sum of its digits is 18. The last two digits are 5 times as much as the first 2 digits. The hundreds and ones places have the same digit.

The last two digits must be a multiple of 5 of a two digit number; The first two digit number is 10. So the last two digits can be
50, 55, 60, 65, . . .
If the last two digits are 50 then the number is
1050
1155
1260
1365
1470
1575this is the first number where the hundreds and ones place have the same digit, and the sum of the digits is 18