Question 136909
hi,
this is a very interesting question.

The number is between 300 and 400 indicates that the digit in the hundred's place is 3.

The number = 40 times the sum of its digits ==> that the units digit is 0.

The tens digit is 6 more than the units digit ==> that the tens digit = 0 + 6
                                                                      6

Thus the number is 360


Good luck!!!

dolly