Acc. to a plan a drilling team had to drill a depth of 270 mtrs. below the ground level. For the first 3 days the team drilled as per the plan. However subsequently finding that their resources were getting underutilized acc. to the plan, it started to drill 8 more mtrs. than the plan every day. therefore the day before the planned date they had drilled to a depth of 280 mtrs. how many mtrs of drilling was the plan for each day.

1) 38 metres
2) 30 metres
3) 27 metres
4) 28 metres

• Ans.2)30
  Use hit and trial method
  Since in first 3days total work done=(3*30)=90
  Rmng=270-90=180
  Now work done per day is increased by 8mts so 30+8=38 mts will be work done from now. And also mentioned that work done before the last day is 280 mts so 10mts will be added to 180
  i.e 190 work will be completed in 5 days therefore ans is 30mts..
• 10 years agoHelpfull: Yes(1) No(1)