Question

Pls help me in the 10 question

Answer 1

Hello dear !
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In a Flower Bouquet 
13/30 of flowers were roses
2/5 of flowers were orchid 
No of gladioli = 7 
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Let the total Number of flowers = x 
ATQ 13/30 of x = no of  Roses 
         2/5 of    x = no of  orchid 
                      7 =  no of gladioli 
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ATGC 
No of roses + no of orchid + no of gladioli = x 

13x/30         + 2x/5             + 7                   = x

(13x + 12 x  + 210)/30                               = x 

13x + 12 x + 210                                       = 30x 

25 x + 210                                                 = 30x 

30x - 25x                                                   = 210 
 
5x                                                              = 210 

x                                                                = 42 
No of roses   = 13 X 42 / 30 = 18. 2 =   18 
No of orchid  = 2 x 42 / 5      = 16. 8 =  17  
No of gladioli = 7 
18 + 17 + 7    = 42
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