Find the annual rate (written as a percent) on a loan of $1950 for 2 years and 9 months if the simple interest earned is $321.75

6%

Step-by-step explanation:

Given that :

Principal , P = $1950

Interest earned, I = $321.75

Period, t = 2 years 9 month = 2 9/12 = 2.75

I = P * r * t

321.75 = 1950 * r * 2.75

321.75 = 5362.5 * r

r = 321.75 / 5362.5

r = 0.06

r = 0.06 * 100% = 6%

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

addition

step-by-step explanation: