A pack of pretzels costs $4, while a pack of chips is 75% more expensive. Maciek went and bought two packets of chips and two packets of pretzels. How much did he pay for his purchases?
One pack of chips is 75/100 * 4 = $
<gadget id="calculator">75/100*4</gadget>
<output>3</output>
3 more expensive than a pack of pretzels.
That means one pack of chips costs 4 + 3 = $
<gadget id="calculator">4+3</gadget>
<output>7</output>
7.
So Maciek paid 4 * 2 = $
<gadget id="calculator">4*2</gadget>
<output>8</output>
8 for the pretzels.
He also paid 7 * 2 = $
<gadget id="calculator">7*2</gadget>
<output>14</output>
14 for the chips.
In total Maciek paid 8 + 14 = $
<gadget id="calculator">8+14</gadget>
<output>22</output>
22 for his purchases.

<result>22</result>