There is a number that is 5 times the sum of its digits.
What is this number? Answer is not 0.

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There is a number that is 5 times the sum of its digits. What is this number? Answer is not 0...

Answer / guest

The number is 45, simply because

45 = 5 * (4 + 5)

How does one find this number?

Let T be the digit in the tens place and U be the digit in
the units place. Then, the number is

10*T + U, and the sum of its digits is T + U.

The following equation can be readily written:

10*T + U = 5*(T + U) or

10*T + U = 5*T + 5*U or

5*T = 4*U

Thus, T / U = 4 / 5

Since T and U are digits, T must be 4 and U must be 5.

There are six boxes containing 5, 7, 14, 16, 18, 29 balls of
either red or blue in colour. Some

boxes contain only red balls and others contain only blue.

Is This Answer Correct ?    34 Yes 3 No

There is a number that is 5 times the sum of its digits. What is this number? Answer is not 0...

Answer / shrikant

the Answer is 9
bcause 9+9+9+9+9=45,so(4+5 is=9)

Is This Answer Correct ?    10 Yes 16 No

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