7. In a certain shop the price of a product, P, went up by 30% on Monday and down by 40% on Tues- day. a. Write the price on Monday in terms of P. b. Write the price on Tuesday in terms of P Find the overall price change in % after the 2 days.
А) P - 0,3P b) P - 0,4P 100% - 30% = 70% = 0,7 Monday 100% - 40% = 60% = 0,6 Tuesday 0,7 * 0,6 = 0,42 = 42% after the 2 day