Malcolm bought dog-food bowls to give away as prizes at a dog-lovers event. the plastic bowls cost $6 each and the stainless steel bowls cost $10.50 each. malcolm bought 7 plastic bowls and spent a total of $136.50 on the prizes.
how many stainless steel bowls did malcolm buy?

Alright! In order to solve this problem we first have to find out how much he spend on plastic bowls. To do that we multiply the amount of plastic bowls he bought by the price:

7$ x 6 = $42

Then we subtract this value from our total price:

136.50 - 42 = 94.50 (This is how much he spend on steel bowls)

Then we divide this value by the price of the steel bowls:

= 9!

He bought 9 stainless steel bowls.

X=14 hope it !