If 10 gallons of syrup are added to 50 gallons of a mixture, which has 10 percent syrup, then what percent of the resulting mixture is syrup?
A and B can do a piece of work in 90 days and 80 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 46 days. The number of days after which A left the work was
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