The sum of the two digits of a two digit number is 15 and the difference between the two digits of the two digit number is 3.
The sum of the two digits of a two digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two-digit number ?
(a) 56 (b) 63
(c) 42
(d) Cannot be determined
(e) None of these
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(e) Let the two digits be x and y.
Then, x + y = 15 ... (i)
x – y = 3 ... (ii)
from equation (i) and (ii), x = 9, y = 6
Product = 9 × 6 = 54
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