the unit digit of a two digit number is 3 and 7 times the sum of the digits is the number itself find the number
hey friends please answer fast urgent
Answers
Answered by
3
the answer is 8 ok yha x
venkatesh58:
thanx
Answered by
2
Answer:
let x be the 10th digit of two digit number
given 3 is unit digit of two digit number
the number is x3 or 10x +3
sum of digits x + 3
given 7[sum of digits ] = number
7[x + 3] = 10x + 3
7x +21 = 10x +3
21- 3 = 10x -7x
18 = 3x
x = 3
the number 63
verification :
7[6+3 ] = 7[9] =63
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