math i need help plz!

posted by .

A store sells televisions for $360 and video cassette recorders for $270. at the beginning of the week its entire stock is worth $45,990. During the week it sells three quarters of the televisions and one third of the video cassette recorders for a total of $27,630. How many televisions and video cassette recorders did it have in its stock at the beginning of the week?

  • math i need help plz! -

    You need to write two equations in two unknowns, and then solve for them both.
    Let x be the original number of TVs and y be the original number of VCRs.

    Here is what you know:
    360 x + 270 y = 45,990
    (3/4)*360 x + (1/3)*270 y = 27,630
    which can be simplified to:
    270 x + 90 y = 27,630

    Tripe the last equation and subtract the first.

    810 x + 270 y = 82,890
    360 x + 270 y = 45,990
    ______________________
    450 x = 36,900
    x = 820

    Use any of the original equations to solve for y.

  • math i need help plz! -

    I've been working on this for a while but I cant seem to get anywhere with this. I created this equation.

    360(x) + 270 (y) = $ 45,990
    360 (3x/4) + 270 (x/3) $27, 630

    There's a starting point. If I figure out how to solve this I'll post.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    A video store sells a certain video for $32, which is 60 percent more than it costs the store to purchase this video. During an inventory sale, employees are invited to purchase remaining videos at 25 percent off the store's cost. …
  2. statistics

    suppse you received a shipment of nine televisions. four of the television are defective. If two televisions are random;y selected compute the probability at least on of the two televisions does not work
  3. math

    Marta's weekly pay for selling large screen televisions is determined by the formula S= $275 + 80n where s is her pay in dollars, and n is the number of large televisions she sells that week. If Marta's pay last week was $835, how …
  4. i need help math

    Ines became the manager of an electronics store. She decided to provide customers with a great holiday deal. A customer will be able to purchase 3 big screen televisions at the following price, the first one at the full price of $750, …
  5. Math

    An electronics store usually sells 18 remote control devices per week at a retail price of $12.49. This week the manager put the remotes on sale for a markdown of 20%, and sold 25 of them. How much more revenue was earned this week …
  6. Math

    First week sells 6 chairs for $80 each. Next week, if chair is not sold, it will sell for 0.85 times previous week's price. Store needs to sell 6 chairs for total of $270 to make a profit. what is the last week in which all 6 chairs …
  7. Math

    First week sells 6 chairs for $80 each. Next week, if chair is not sold, it will sell for 0.85 times previous week's price. Store needs to sell 6 chairs for total of $270 to make a profit. what is the last week in which all 6 chairs …
  8. trig

    Karen earns 43 dollars per week working pt at a bookstore. she makes one dollar more for each book she sells. the amt A, in dollars that Karen earns in a week ifshe sells b books is given in the function A(b) =43 + b how much does …
  9. Finite Math

    15 An appliance store sells two brands of televisions. Each Daybrite set sells for $425, and each Noglare set sells for $700. The store‚Äôs warehouse capacity for television sets is $400, and new sets are delivered only each month. …
  10. math

    First week sells 6 chairs for $80 each. Next week, if chair is not sold, it will sell for 0.85 times previous week's price. Store needs to sell 6 chairs for total of $270 to make a profit. what is the last week in which all 6 chairs …

More Similar Questions