Question

in a flower bouqet, 13÷30 of flowersw werer roses,2÷5 of the flowers were orchids and the remaning were gladioli. if the number of gladioli flowers were 7, how many flowers were there in the bouquet.

Answer 1

the answer is:                                                                                                          let the total  total number of flowers =x                                                             then the number of in the bouquet =13/30+2/5+7
x-[13/30+2/5]x=7
first we will solve the brackets:
x-[13/30+2/5]x= 7 find the lcm of 30 and 5 that is 30
and then solve x-[13/30+2/5]x =7 
 that is =x-[5/6]x = 7
x =x-{5/6}x=7 , 
then x = 1x/6=7
x = 6*7 = 42
x  =42 
the total number of flowers in the bouquet is 42