Apportionment

Hi..john sir: Plz explain me following. There is an inventory of total 100,000 units, out of which 85% are units of invetory A type and 50% of inventory B type. How many units are of type A inventory A type unventory B type.. Plz explain..if question is wrong then make the wordinng of question coreect plz...i'll b very thankful to u.. If type A material is 85% of then it should be 85000 and type B should b 50,000..it comes to 135000 total units..but total laptops are 100000.. Solution is as follow. =85%+50% =135% Now 85/135×100,000= 62962 50/135×100,000=37037 But it does't make any sense to me..i guess wording is not ok..