Quantitative Apptitude Puzzle

                     Solve the math Puzzle

In an exhibition of Watches there are three Companies HMT, ROMAX, and TITAN who introduced their models in the exhibition and it is found at the last of the exhibition that total 300 customers have visited exhibition , 50% customers purchased HMT; 55% customers purchased TITAN; 45% customers purchased ROMAX. 20% of customers who purchased HMT also purchased other two brands. Customers who purchased any of two brands are 95. Customers of only HMT are 20 more than that of only ROMAX. Customers who purchased only HMT and ROMAX are 40.

How many of them purchased only one brand of watches??

1)175                    2)160                      3)165                        4)170                   5) None of these

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Answer:: Option 4