The drama club is selling tickets to their spring performance. It is $3 for a student and $8 for an adult. They sold 225 tickets and earned $1400. How many adult and student tickets?

number of students tickets = 80

number of adults tickets = 145

Step-by-step explanation:

Let

x = number of students tickets

y = number of adults tickets

x + y = 225 (1)

3x + 8y = 1400 (2)

From (1)

x = 225 - y

Substitute x = 225 - y into (2)

3x + 8y = 1400 (2)

3(225 - y) + 8y = 1400

675 - 3y + 8y = 1400

- 3y + 8y = 1400 - 675

5y = 725

y = 725/5

y = 145

Substitute y = 145 into (1)

x + y = 225 (1)

x + 145 = 225

x = 225 - 145

x = 80

number of students tickets = 80

number of adults tickets = 145

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: