1.At 8% compounded annually, how long will it take $750 to double? ______ YEARS USE RULE 72. 2.Grandma gifted you RM10,000 for your achievement in SPM. You placed it into an account that pays an annual rate of 3.99% in January 2019, and leave it until your graduation in December 2025. How much fund would you accumulate then? 3.If you have RM500,000 in an account earning 5.1% annually, what constant amount could you withdraw each year for 15 years at the beginning of the year?