1. The ten's digit of a two digit number is twice the unit's digit. The sum of the number
and its unit's digit is 66. Find the number.
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Answer:
x = 6
y = 3
no. = 63
Step-by-step explanation:
x = 2y
10x +2y = 66
10(2y) + 2y = 66
22y = 66
y = 3
x = 6
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