In the lab, jenny has two solutions that contain alcohol and is mixing them with each other. she uses
200
milliliters less of solution a than solution b. solution a is
14%
alcohol and solution b is
17%
alcohol. how many milliliters of solution b does she use, if the resulting mixture has
375
milliliters of pure alcohol?

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

With alll of except for the 2 that i did already

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?