5. Kelly Fisher has a total of $30,000 invested in two municipal bonds that have yields of 8% and 10% interest per year, respectively. If the interest Kelly receives from the bonds in a year is $2640, how much does she have invested in each bond

$18,000

$12,000

Explanation:

The formula for simple interest = (P x R × T ) / 100

P = principal

R = interest rate

T = time

Let x = amount invested in the bond thay yields 8%

And y = amount invested in the bond thay yields 10%

We know that

X + y = $30,000

And

0.08X + 0.10y = $2640

We have to solve for x and y using simultaneous equation

Make y the subject of the formula in the first equation

Y = $30,000 - x

Substitute for y in the second equation:

0.08x + 0.10 ($30,000 - x ) = $2640

0.08x + 3,000 - 0.10x = $2640

Collect like terms and solve for x

-0.02×=$-360

× = $18,000

Substitute for x in the first equation , y = $12,000

I hope my answer helps you

the specific actions take by the fed. what the fed was attempting to do by taking these actions. the result of the actions taken by the fed

hi : ) i found this so i hope this !

"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"