Interview Maths Puzzle HR Interview Interview

By using only one straight line, can you make the equation correct. 5+5+5=550 ?

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Interview Other Question

A motorboat, whose speed in 15km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. the speed of the stream (in km/hr) is:
(a) 4 (b) 5 (c) 6 (d) 10 (e) none of these
I can give you five zeros make it 120 ?(Using mathematical operations)