There are two 2 digit numbers ab & cd. ba is another number prepared by reversing ab.If ab*cd=493 & ba *cd=2059. What is the value of ab+cd?

ab * cd = 493 …… [1]
ba * cd = 2059 …… [2]

[2]/[1] :
ba / ab = 2059 / 493
ba / ab = 71 / 17
Hence, ab = 17 and ba = 71

Substitute ab = 17 into [1] :
17 * cd = 493
cd = 29

ab + cd = 17 + 29
ab + cd = 46