Home > Algebra > Multiplication of Rational Numbers

One day a sold 30 sweatshirts. White ones cost $10.95 and yellow ones cost $13.50. In all, $371.85 worth of of sweatshirts were sold. How many of each color were sold?

Answer 1

Nathan Axel

13 white colored sweatshirts and 17 yellow colored sweatshirts were sold.

Let the number of white sweatshirts be '#x#' and yellow sweatshirts be '#y#'

Then,

Writing the given questions in equation form:

#x+y=30#

or #x=30-y# (Subtracting y from both sides)

Again, From Question

#10.95x +13.50y = 371.85#

Putting the value of x as 30-y from above, we get

#328.5-10.95y+13.50y = 371.85# Solving for y , we get y=17 and x=13

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Genesis Allen

Let x be the number of white sweatshirts sold and y be the number of yellow sweatshirts sold. We have the following system of equations:

x + y = 30 (since a total of 30 sweatshirts were sold)
10.95x + 13.50y = 371.85 (total value of the sweatshirts sold)

Solve the system of equations to find the values of x and y.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.