A can build up a wall in 8 days while B can break it in 3 days.A has worked for 4 days and then B joined to work with A for another 2 days only.In how many days will A alone build up the remaining part of the wall.guys please me clearly
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A CAN BUILD IN ONE DAY=1/8
A WORK FOR 4 DAYS=4/8=1/2
B DESTORY IN ONE DAY=1/3
A AND B TOGETHER=1/3-1/8=5/24
FOR TWO DAYS=5/24*2=5/12
total work done=1/2+5/12=11/12
REMAINING 1/12work done by A in 12/8=3/2 days
A WORK FOR 4 DAYS=4/8=1/2
B DESTORY IN ONE DAY=1/3
A AND B TOGETHER=1/3-1/8=5/24
FOR TWO DAYS=5/24*2=5/12
total work done=1/2+5/12=11/12
REMAINING 1/12work done by A in 12/8=3/2 days
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