In which shop can you buy the following? • some stamps • a packet of aspirin • a kilo of sausages • a pair of sunglasses • some prawns • a bunch of tulips

Х+х+0,5х+0,25х+1=100
2,75х=99
х=36

36 учеников он имел
х+х+0,5х+0,25х+1=100
2,75х+1=100
2,75х=100-1
2,75х=99
х=99\2,75
х=36