Answers

2016-04-26T21:08:54+05:30
5/7×x+65=80
5/7x=80-65
5/7x=15
x=15×7/5
x=21✌✌
0
2016-04-28T15:26:09+05:30
Let the unknown number be x
a/q  5/7 *x +65=80
      = 5/7*x= 80-65
      =   5x=  15 *7
        = x =  105/5
        ∴ x= 21
so the required number is 21.
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