Question

A,B,C,D and E went to a restaurant for dinner. A paid 1/2 of the bill, B paid 1/5 of the bill and rest of the bill was shared equally by C,D and E. what fraction of the bill was paid by each?

Answer 1

Fraction of bill  paid by A - 1/2
 Fraction of bill paid by B = 1/5
Total fraction paid by A and B = 1/2 + 1/5
                                                 L.C.M. OF 2 AND 5 = 10
                                                  =1/2*5/5 and 1/5*2/2
                                                  = 5/10 and 2/10 = 7/10
Total fraction of the bill =10/10
Left fraction of the bill = 10/10 - 7/10
                                    = 3/10
So 3/10 divided amongst or by 3 (C,D&E)
                                                   = 1/10


Therefore C,D AND E paid 1/10 of the bill 


Hope it is clear !!!!