Bond income. Your grandma is searching for some investments that will generate a stream of income in her elderly years. She needs $16,000 to cover her living expenses. Her advisor has just used her funds to invest in 200 corporate bonds that have face values of $1,000. 100 of these bonds have coupon rates of 7.4% and YTM of 8.1%, while the other 100 have coupon rates of 6.9% and YTM of 8.1%. Will grandma have enough money to live on?