WORD PROBLEMS 1

1/8 of the lessons is Allocated to mathematics and 1/5 is allocated to civics. What fraction is left for other subjects?

solution

amount of lessons allocated = 1  +  1

                                                8      5

amount of lessons allocated = 5  +  8

                                                    40

amount of lessons allocated = 13

                                                40

Now, the total number of lessons  = 1 = 40

                                                                40

Fraction for other subjects = total number of lessons  -  amount of lessons allocated.

Fraction for other subjects = 40  -  13

                                               40     40

Fraction for other subjects = 27 

                                              40     

Hence fraction for other subjects is 27/40

TRY THIS..................

2/11 of the lessons is Allocated to mathematics and 3/8 is allocated to civics. What fraction is left for other subjects?