Tuesday 1 December 2015

WORD PROBLEMS 1




1/9 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
                                                9     5
amount of lessons allocated = 5  +  9
                                                   45
amount of lessons allocated = 14
                                                45
Now, the total number of lessons  = 1 = 45
                                                                45
Fraction for other subjects 
     = total number of lessons  -  amount of lessons allocated.

Fraction for other subjects = 45  -  15
                                             45     45
Fraction for other subjects = 30 
                                             45    

Hence fraction for other subjects is 30/45

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

3/10 of the lessons is Allocated to mathematics and 3/5 is allocated to civics. What fraction is left for other subjects?

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