general Maths Puzzle

x can do a piece of work in 16 days and y can do it in 24 days.With the help of z entire work was finished in 6 days.What will be the share of x, if the total compensation is Rs 1100 ?

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general Other Question

The screen display of an electronic lock can be unlocked by touching 7 points in certain sequence without overlap , out of total 9 points, arranged in the rows of 3. In how many ways this unlocking is possible ? Which is the smallest number divisible by all the numbers from 1 to 9 ?