A train leaves New Delhi for Ludhiana, 324 km away, at 9 a.m. One hour later, another train leaves Ludhiana for New Delhi. They meet at noon. If the second train had started at 9 a.m. and the first train at 10.30 am., they both would still have met at noon. Find the speed of each train.

Beaker A contains sugar solution with 18 percent sugar.beaker B contains sugar solution with 12 percent sugar.How much of each must he mixed together to get solution of 16 percent sugar weighing 240 gm of it ?