Mrs Rossi wrote a mystery number it is 3 digit number the tens are double the ones the hundred are double the tens the sum of the digit is 14 What number is it. The answer is 491
Guys what’s the answer
Idk know anything
842
The numbers add up to 14 and 2 is double the tens and 4 is double the hundreds which is the 8
To solve this mystery number problem, we need to carefully analyze the given conditions and use algebraic expressions to represent the unknowns.
Let's assign variables to each digit of the mystery number. Let's say the ones digit is represented by 'x,' the tens digit is '2x' because it is double the ones, and the hundreds digit is '4(2x)' since it is double the tens, which simplifies to '8x.'
Now, we have the following equation based on the sum of the digits being 14:
x + 2x + 8x = 14
Combining like terms, we get:
11x = 14
Now, we solve for x by dividing both sides of the equation by 11:
x = 14 / 11
x ≈ 1.27
Since we are dealing with whole numbers, we will round it down to the nearest whole number, which is 1.
Now that we have the value of x, we can substitute it back into our variables to find the mystery number. The ones digit (x) is 1, the tens digit (2x) is 2, and the hundreds digit (8x) is 8.
Therefore, the mystery number is 821, not 491 as stated in your answer.
Those digits add up to 14, but the number doesn't meet the other criteria.
hundred are double the tens
84_
63_
42_
tens are double the ones
421
842
Which is it?