Jake earned $430 in interest on a $2500 investment after 18 months. What was the annual interest rate? (round to the nearest whole percent)

Question

sarahsingleton1 sarahsingleton1

01-12-2016
Mathematics

contestada

Jake earned $430 in interest on a $2500 investment after 18 months. What was the annual interest rate? (round to the nearest whole percent)

Respuesta :

Otras preguntas

what is the sum of 7/10 and 6/100

which trinomial is equivalent to (3x-1)(x+4)

having troubles with inequalities.. 3.8x + 14.5 < 32

which trinomial is equivalent to (3x-1)(x+4)

having troubles with inequalities.. 3.8x + 14.5 < 32

what is the sum of 7/10 and 6/100

which trinomial is equivalent to (3x-1)(x+4)

apologiabiology apologiabiology · Answer 1 · 2016-12-01T19:08:21+01:00

apologiabiology apologiabiology

01-12-2016

I=PRT
I=interest
P=principal=investment
R=rate in decimal
T=time in years
remember 12 months per year

given
I=430
P=2500
R=?
T=18/12 years=1.5years

430=2500 times r times 1.5
430=3750r
divide both sides by 430
0.1146666=r
11.4666%
11%

Answer Link

mikehallusarmy mikehallusarmy · Answer 2 · 2016-12-01T19:09:46+01:00

mikehallusarmy mikehallusarmy

01-12-2016

17% interest rate will give you 425 dollars

Answer Link