For the following questions answer them individually
A wholesaler sells a watch to a retailer at a gain of 36% and the retailer sells it to a customer at a loss of 25%. If the customer pays Rs 2499, what had it cost the wholesaler?
A student multiplied a number by 11/13 instead of 13/11. What is the percentage error in the calculation?
P and Q can do a project in 25 and 50 days respectively. In how many days can they complete 18% of the project if they work together?
In a class of 56 students there are 21 girls. The average weight of these girls is 56 Kg and average weight of the full class is 62.875 kgs. What is the average weight of the boys of the class?
A bag has Rs 11 in the form of 1-rupee, 50-paise and 10-paise coins in the ratio of 4:2:5. Find the number of 50-paise coins.
Marked price of an item is Rs 800. On purchase of 1 item discount is 15%, on purchase of 4 items discount is 38%. Rajshri buys 5 items, what is the effective discount?
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