The expenses of a journey are made up of bus,train and taxi fares.The train fare is 5 times the bus fare,and the taxi fare is twice the bus

Bus + Train + Taxi  =  16.

Train = 5·Bus

Taxi  = 2·Bus

Substituting:  Bus + 5·Bus + 2·Bus  =  16

Simplifying:                         8·Bus  =  16

Dividing by 8:                         Bus  =  2

Train  =  5·Bus  =  5·2  =  10

Taxi    =  2·Bus  =  2·2  =  4