Sarthak can fill a pit of sand in 14 days while Vivaan takes 35 days to fill it. Ali can empty a full sand pit in 12 days. If all start working together in the empty pit, then in how many days will the sand pit be filled again?
SarthakVivaanAli (-) Empty 143512 420 301235 Fill in one day-30+12-35=7unit Total days =420/7=60days.
Which of these services uses a "master password" to log in to many different Web sites for you?
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