if a place of 2 digit number is changed to each other, then the new number increases 18 from the original old number. What was the original old number?
options
53
57
75
86
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Answer:
grab your answer, here it is
the answer is 57 option number (b)
Step-by-step explanation:
as to solve this question we can check each option
Let's check option number (a)
53
now change the digits
35(it became smaller than the first one so so it can't be your answer)
check option number (b)
57 - 75
it is greater than the first one so let's check it by subtraction
75-57=18
the condition is true so this is the answer but we can check the rest options if we want.
option C
75 - 57
it became smaller on interchanging the digits so it can't be your answer
option D
86. - 68
it also become smaller on interchanging the digits so it can't be your answer.
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