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89.Olivia wanted to buy shoes priced at $90. In the meantime the price increased by 10%, and after a while decreased by 10%. What is the price of the shoes now?
90.Mason, Joshua, and Nicholas worked together and earned $2,160. They finished a job in 30 days and each day Mason worked 2 hours, Joshua worked 3 hours, and Nicholas worked 4 hours. They want to share money according to the number of working hours. How much money will Joshua receive?