Anyone know the equation for this one?

c = 20r is the equation

Step-by-step explanation:

From the figure given in the question,

cost of 1 dozen of rose = 10 which is 1*20

cost of 2 dozens of rose = 40 which is 2*20

cost of 3 dozens of rose = 60 which is 3*20

cost of 4 dozens of rose = 80 which is 4*20

cost of 5 dozens of rose = 100 which is 5*20

similarly, we can say

cost of r dozens of rose = r*20 = 20r

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.