# Math

A disc jockey must play 14commercial spots during 1hour of radio show. Each commercial is either 30 seconds or 60 seconds long. If the total commercial time during 1hour is 11 minutes, how many 30 second commercials were played that hour? How many 60 second commercials?

1. 👍 0
2. 👎 0
3. 👁 199
1. x+y = 14
30x+60y = 660

6 @ 30"
8 @ 60"

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Math

Tickets for a play cost Php 250 for adults and Php 200 for children.The sponsor of the show collected a total amount of not more than lhp 44,000 from more than 150 adults and children who watched the play. A. What mathematical

2. ### operating car

Which one of the following sources is most likely to give you objective information about the expected performance of a new car model? A:Newspaper ad B:Dealer's local radio commercial C:Manufacturer'stelevision advertising

3. ### Physics

Electrons on a radio broadcasting tower are forced to oscillate up and down an antenna 535,000 times each second. Show that the wavelength of the radio waves that are produced is 561 m.

Which one of the following sources is most likely to give you objective information about the expected performance of a new car model? A. Newspaper ad B. Dealer's local radio commercial C. Manufacturer's television advertising D.

1. ### Physics

A woman with a mass of 50kg is standing on the rim of a large disk that is rotating at an angular velocity of .50 rev/s about an axis through its center. The disk has a mass of 110kg and a radius of 4.0m. Calculate the magnitude

2. ### Physics (EMI)

A metal disc of radius R rotates with angular velocity Omega (w) about an axis perpendicular to its plane passing through its centre in a magnetic field B acting perpendicular to the plane of the disc calculate the induced EMF

3. ### econ

The International Disc Jockey\'s Union has a wage contract that stipulates a yearly wage increase based on the Consumer Price Index. If this year\'s wage is \$25.00, the current CPI is 180, and the contract was first signed in the

4. ### statistics

For which of the following would it be most appropriate to use an ANOVA to analyze the data? A. A researcher is interested in determining the most effective format for advertising. He randomly assigns 60 people to one of three

1. ### physics

Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.85 10-2 m and a thickness of about 7.14 10-3 m. The shear modulus of cartilage is 1.16 107 N/m2.

2. ### math

Find the expected value of a \$1 bet in six-spot keno if three winning spots pays \$1 (but you pay \$1 to play, so you actually break even), four winning spots pays \$3 (but you pay \$1 to play, so you profit \$2), five pays \$100, and

3. ### math

Plz hurry and show your work thanks :) The cost of admission to the state aquarium increased from \$12.50 to \$15.00. What was the percent increase? A project is underway to increase the size of the parking lot at the library. Once

4. ### Math-confused!

A disc jockey has 12 songs to play. Seven are slow songs, and five are fast songs. Each song is to be played only once. In how many ways can the disc jockey play the 12 songs if: *The songs can be played in any order. *The first