A builder completed 5/12 of a building in 2 month's and 3/7 of the remaining part in the third month 24 ft of the building is still left find the total length of the building
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let total work be 1
then work done in first case = 5/12
left work = 1-5/12=7/12
now in 2nd case , work done = 7/12×3/7=1/4
now left part = 7/12-1/4=4/12=1/3
a/q
1/3=24
so,1= 24×3=72 ft
then work done in first case = 5/12
left work = 1-5/12=7/12
now in 2nd case , work done = 7/12×3/7=1/4
now left part = 7/12-1/4=4/12=1/3
a/q
1/3=24
so,1= 24×3=72 ft
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