50 wells drilled are 25% of the total wells. Therefore, 1% (which is one twenty-fifth of 25%) of the wells is:
50 wells /25= 2 wells.
2 wells are 1% of the total wells. Therefore, 100% (which is 100 times as much as 1%) of the wells are:
2 wells *100= 200 wells.
Conclusion: The total number of wells that were drilled is 200 wells.
Hope this would help~