The sum of the digits of a 2-digit number is 7. If the digits are reversed, the new number increased by 3 equals
4 times the original number. Find the original number.
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Answer:
Here sum of two digits equals to 7
possible two digits are = (1,6), (2,5),(3,4)
When the digits are reversed and increased by 3
new numbers formed
61 = 61+3 = 64
52= 52+3=55
43 = 43+3= 46
Now 4 times original number
16 *4 = 64
25*4=100
43*4 = 172
Hence cleary original number is (1,6) that is 16
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Let x be the digit at ten's place and y be the digit at unit place.
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