Four friends have different numbers of cows on their farms. jorge has 3 times as many cows as carla. marcus has half as many cows as jorge. dominique has 2 less than 4 times as many cows as carla. how many cows do they each have if they have a total of 169 cows?

Let us say:

x = Jorge

y = Carla

z = Marcus

a = Dominique

We are given that:

x = 3y                                                    --> 1

z = 0.5x                                                 --> 2

a = 4y – 2                                             --> 3

x + y + z + a = 169                             --> 4

Substituting 1 to 2:

z = 0.5(3y) = 1.5y                              --> 5

Substituting 1, 3 and 5 to 4:

3y + y + 4y – 2 + 1.5y = 169

9.5y = 171

y = 18

Hence,

x = 3y = 3*18 = 54

z = 0.5x = 0.5(54) = 27

a = 4y – 2 = 4(18) – 2 = 70

y = 18

step-by-step explanation:

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.