The bike shop charges $10 for flat tire repair and $40 for a full tuneup. the total receipts for services was $3000. 10 tuneup’s were done. how many flat tires were repaired? what were the total sales in dollars for each?

260 flat tyres were repaired.

$400 of sales in full tuneups

$2600 of sales in flat tyre repairs

Step-by-step explanation:

$40 x 10 = $400

$3000 - $400 = $2600

$2600 ÷ $10 = 260 flat tyres

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it