abrarrassem273 abrarrassem273

12-10-2020
Mathematics

contestada

At a concert, tickets cost either $40 or $60. 700 tickets were sold at a cost of $33600. Find how many $40 tickets were sold.

Respuesta :

mathstudent55 mathstudent55

12-10-2020

Answer:

420

Step-by-step explanation:

Let x = number of $40 tickets.

Let y = number of $60 tickets.

x + y = 700

40x + 60y = 33600

-40x - 40y = -28000

20y = 5600

y = 280

x + y = 700

x + 280 = 700

x = 420

Answer: 420 $40 tickets were sold

Answer Link

Otras preguntas

Advancements in architecture were not major achievements during the Gupta period. true or false

Each gram of carbohydrate supplies how many calories?

In order to solve the following system of equations by subtraction, which of the following could you do before subtracting the equations so that one variable wi

Which observations show that a change in state of matter has occurred? Wood burns, producing gas and an ashy residue. Overnight, dew forms on the grass. An alka

What are the answers for these 2 questions and the work

A credit card issuer charges an apr of 10.82%, and its billing cycle is 30 days long. what is its periodic interest rate? show your work.

This is an example of an arithmetic series: 6 + 8 + 10 + 12 + . . . + (4 + 2n) + . . .

Tú ________ en español.

Ben recorded a song in an acoustic recording studio at his college using a laptop. What type of recorder did Ben use to record his song?

Why are food and water the limiting factors that usually have the greatest effect on population size?