0
Call the two digit number xy. So: 10x + y = 2(x + y)
Multiplying out: 10x + y = 2x +2y
Rearranging: 8x = y We can at this point introduce the constraints that x and y must be integers between 0 and 9. Only one value of x will allow this: 1. So y = 8. The answer, then, is 18. Call the two digit number xy. So: 10x + y = 2(x + y)
Multiplying out: 10x + y = 2x +2y
Rearranging: 8x = y We can at this point introduce the constraints that x and y must be integers between 0 and 9. Only one value of x will allow this: 1. So y = 8. The answer, then, is 18.
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What two digit number is twice the sum of its digits?
18 is the only number that matches these criteria.
Translate the difference between twice a number and four time the sum of the number and seven is equal to two?
The difference between a number x and twice y is equal to fifteen.
What is the smallest whole number that is equal to seven times the sum of its digits?
21
The sum of the digits of a two digit number is 9 the number itself is equal to twice the product of its digit find the number?
The Answer is 36 btw. 3 + 6 = 9 3 x 6 = 2(3x6) 2(18) = 36
The units digit of a two digit number exceeds twice the tens digit by 1 what numbers if the sum of its digit is 10?
The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
