A customer at a bakery paid $78.30 for donuts and cupcakes. Each donut cost $1.95 and each cupcake cost $2.85. If they bought a total of 30 donuts and cupcakes, how many donuts did they buy?

  (1)

  (2)

From equation (1) we can solve for x and we got:

(3)

Replacing (3) into (2) we got:

And solving for y we got:

And then solving for x we got:

So then we have 8 donuts and 22 cupcakes

Step-by-step explanation:

Let x the number of donuts and y the number of cupcakes, from the info given we can set up the following equations:

  (1)

  (2)

From equation (1) we can solve for x and we got:

(3)

Replacing (3) into (2) we got:

And solving for y we got:

And then solving for x we got:

So then we have 8 donuts and 22 cupcakes

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step-by-step explanation:

80 the answer is 80

step-by-step explanation: