SOLUTION: the tens digit of a 2 digit no. is 2 times its ones digit. if the digits are reversed,the sum of the original no. and the no. so formed is 66.find the number. ..................
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Question 625140: the tens digit of a 2 digit no. is 2 times its ones digit. if the digits are reversed,the sum of the original no. and the no. so formed is 66.find the number. .........................................help me plz i am stuck thank you.
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
Letthe number = "ab"
a = 2b
10a+b + 10b+a = 66
11(a+b)= 66
a+b = 6
Then:
2b+b=6
3b=6
b = 2
a = 4
Answer: the number is 42
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