Instructions Question 1 1 pt Engr. Salvador has to pay her bill in credit card in instalment basis. First payment is P20,000 at the end o 1st year, P20,000 at the end of 3rd year, P30,000 at the end of 6th year and P8,000 at the end of 8th year. How much is the total payment of Engr. Salvador after 10 years at a rate of 10% per annum? O P139.736 O P149,736 O P159.736 O P169.736