Post Your Answer
Ans 7:
Post Your Answer
Post Your Answer
Ans 1:
Class : Class 10 
                                                                                                        
                                                                                                        This equation is formed like that:
Let present age =x
Twenty years ago=x-20
A.T.C
x-20 = 1/3 ×x
-20 =1/3x-x
-20 = -2/3x
20÷2/3 =30 years
Age after 15 years =30+15 =45 years
                                                                                                    
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Ans 1:
Class : Class 7 
                                                                                                        
                                                                                                        according to me, the ans should be 3 litres. as 1.5 L * 3 = 4.5 L which is the amount used in 3 days(Tue, Wed n Thurs) hence, 7.5 L- 4.5 L=3 LITRES.That, according to me, is the answer
                                                                                                    
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Ans 1:
Class : Class 9 
                                                                                                        
                                                                                                        d = 75% of old d .....
=> r = 75 %of old r.....
volume of sphere =4/3 *pi*r*r*r......
                    new=  4/3*pi*r*r*r*27/64.....
                    4/3*pi*r*r*r   will cancel out.....
                   volume(new) =27/64 of old, decreased by  37/64, % =37/64*100=3700/64=37*25/16 =   57.81....
                       therefore answer is opt (D)  .....hope you understood!!!!!         
                                                                                                    
                                                                                                     
             
             
         
                                                                         is ______.
  is ______.
 
 
 
 
 
 of my present age. What will be my age after fifteen years?
 of my present age. What will be my age after fifteen years?
 of oil on Monday. She used
 of oil on Monday. She used  of oil everyday. How much oil is left with her after Thursday?
 of oil everyday. How much oil is left with her after Thursday?
 
 
 
 
