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Get access to the detailed solutions to the previous years questions asked in IIM IPMAT exam
Efficiency of 1st worker = 2x Efficiency of 3rd worker
Let efficiency of 3rd worker be x
The efficiency of 2nd worker be Y units 1 hr.
Let the total work be 30 units
Time Taken = (Work Done)/Efficiency
Efficiency of 1st worker = 2x
Together they take 1 hr. to build a wall i.e. do 30 units of work