Sum of two digits is 30 and there difference is 8. Find the product of the two digits?
Answer: 209
Explanation
Suppose first digit = A
Second digit = B
A + B = 30 i
A - B = 8 ii
A = 30 - B
(30-B) - B = 8
30 - 2B = 8
-2b = 8 -22
2b = 22
B= 11
A + 11 = 30
A = 30 - 11
A = 19
A = 19 anf B = 11
A + B = 209
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