Since the room cost $40 you would do $100 - $40 = $60 so she has $60 left and it cost $12 for each guest so 12 * 5 = 58 y= she can invite 5 guest to her party I hope this helped
<span>It will take 20 minutes. The fridge needs to cool down by 90-50=40degrees. The fridge cools at 2 degrees per minute, i.e. 40/2=20 minutes total.</span>
