math

4. Thomas is at a store buying school clothes. T-shirts are on sale for $13 each and jeans are on sale for $18 each.
a) Write an equation that represents the total cost for x T-shirts and y pairs of jeans.

I need help with a..



b) Thomas bought six T-shirts and his total bill came to $168. How many pairs of jeans did he buy? Show all your work.

$13 x 6 (T) = $78.00
$18 x 5 (J) = $90.00
$90.00 + $78.00 = $168.00

asked by Sasha
  1. please help.

    posted by Sasha
  2. x and y are defined in the question, so the cost equation would be

    cost = 13x + 18y

    so for b) you know cost = 168, x = 6

    168 = 13(6) + 18y
    168 = 78 + 18y
    90 = 18y
    y = 90/18 = 5
    He bought 6 t-shirts and 5 pairs of jeans

    posted by Reiny

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Math

    Store a has a promotion if you Bryce three shirts you get 25% off the total price of the three shirts store be has the same shirts on sale with a promotion that if you buy three shirts you get the third shirt on a 50% discount
  2. Algebra 1

    The student council is buying school T-shirts to sell during a fundraiser. The cost (y) of school T-shirts is a linear function of the number of T-shirts bought (x). The student council can buy 100 T-shirts for $825 and 300
  3. math

    at a sale,josh bought 4 shirts and 3 pairs of jeans for $181.at the same store,mike bought 1 shirt and 2 pairs of jeans for $94.
  4. maths

    When buying Brilliant T-shirts, Bradan determines that the total cost of buying N shirts is given by the function C(N)=0.04N2−36N+9000 If he wants to minimize the total cost of buying shirts, how many shirts should he buy?
  5. math

    Traditions Clothing Store is having a sale. Shirts that were regularly priced at $20 are on sale for $17. What is the percentage of decrease in the price of the shirts?
  6. math

    When the Senior class decided to order T-shirts, they were quoted a price of $7.50 per shirt plus a setup fee. The total cost for 300 shirts was $2,450. Write an equation in the form y = mx + b that represents the cost, y, for x
  7. Math

    Business and finance. A store has T-shirts on sale at 2 for $5.50. At this rate, what do five T-shirts cost?
  8. math

    a store has 3 small childrens shirts, 3 medium and 1 large childrens shirts. they have 5 large adults shirts for sale. what is the mathematical probability of someone buying a large shirt?
  9. English

    1. All shirts are 10 % off. 2. All shirts are on sale, 10 % off. -------------- Are both the same? Does 'on sale' mean 'at a reduced price' in Sentence 2? 3. All shirts have 10 % off. (Is this grammatical?) 4. The watermelons are
  10. Algebra

    Jess saved $500 working during the summer. He plans to buy school clothes with his money. He found jeans he liked for $30 per pair, including tax, and shirts for $17, including twice. If he buys exactly twice as many shirts as

More Similar Questions