a number of two digits is such that its units digit is x and ten ten digit is (12-x).when the digit are reversed the no.is increased by 54.find the number. please help me it is urgent.
Answers
Answered by
70
units digit = x
tens digit = 12-x
its value = 10(12-x) => 120-10x
if the digits are reversed then,
units digit = 12-x
tens digit = x
its value = 10x
according to question
x+120-10x= 12-x+10x+54
120-9x = 66+9x
54= 18x
units digit = x = 54/18 = 3
then, 12-x = 12-3 =9 (tens digit)
so , the number is (9×10)+3 => 90+3 => 93
hope this helps
any confusion then message me
tens digit = 12-x
its value = 10(12-x) => 120-10x
if the digits are reversed then,
units digit = 12-x
tens digit = x
its value = 10x
according to question
x+120-10x= 12-x+10x+54
120-9x = 66+9x
54= 18x
units digit = x = 54/18 = 3
then, 12-x = 12-3 =9 (tens digit)
so , the number is (9×10)+3 => 90+3 => 93
hope this helps
any confusion then message me
Answered by
5
Answer:
unit digit =x
tens digit=12-x
it's value =10(12-x)=120-10x
we reversed then
unit digit=12-x
tense digit=x
according to the question
x+120-10x=12-x+10x+54
120-9x=66+9x
54=18x
unit digit=x
x=54/18
3
then,
12-x=12-3=9 is tense digit
(9×10)+3
90+3
93
ok meet you next question
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