aimforthemedic

10-25-2008, 05:48 AM

I am having a problem with two questions.

On the first question, I end up with a negative number every time no matter what I do to the formula.

1: A total of $32,000 is invested to provide retirement income. Part of the $32,000 is invested in an account paying 9% annual simple interest. How much should be invested in an account paying 11% simple interest so that the total income after one year is $35,360?

On this next question...I don't even know where to start.

2: To qualify for the Big-Foot half-marathon, a runner must have completed 5 half-marathons with an average time of (at most) 1:50, rounded up to the nearest minute. A certain runner has completed 4 half marathons with times: 1:45, 1:55, 2:01, and 1:56 (all times have been rounded up to the nearest minute). What completion times (if any) will qualify this runner for the Big-Foot half-marathon? (Rounding up to the nearest minute means if you run a half marathon in 1:50:01 it is recorded as 1:51)

Can anyone help me out?

On the first question, I end up with a negative number every time no matter what I do to the formula.

1: A total of $32,000 is invested to provide retirement income. Part of the $32,000 is invested in an account paying 9% annual simple interest. How much should be invested in an account paying 11% simple interest so that the total income after one year is $35,360?

On this next question...I don't even know where to start.

2: To qualify for the Big-Foot half-marathon, a runner must have completed 5 half-marathons with an average time of (at most) 1:50, rounded up to the nearest minute. A certain runner has completed 4 half marathons with times: 1:45, 1:55, 2:01, and 1:56 (all times have been rounded up to the nearest minute). What completion times (if any) will qualify this runner for the Big-Foot half-marathon? (Rounding up to the nearest minute means if you run a half marathon in 1:50:01 it is recorded as 1:51)

Can anyone help me out?