1. Mang randy collects P40 for every haircut at Randy Barber Shop.If on Sunday,he has 48 customers,how much does he earn for that day after deducting 50% share for the shop operator?

2.The number of hours required to complete a certain job varies inversely as the number of machines used to do the work, assuming that they operate at the same rate. If 4 machines can complete a certain job in 10 hours,how long it take 6 machines to complete the same job?​