If 35% of a number added to 39 is the number itself, the number is???
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Answered by
319
Let the no. be x.
35% of a no.= 35x + 39 = x
100
Then x - 7x = 39
20
x = 20×39
13
x=60
35% of a no.= 35x + 39 = x
100
Then x - 7x = 39
20
x = 20×39
13
x=60
Answered by
128
Let the number be x
35% of that number added to 39 is the number itself = 35x/100 + 39 = x
⇒7x/20 + 39 = x
⇒x - 7x/20 = 39
⇒(20x-7x)/20 = 39
⇒13x/20 = 39
⇒ 13x = 39×20
⇒ 13x = 780
⇒ x = 780/13
⇒ x = 60.
Check : 35x/100+39=x
⇒35(60)/100+39 = 60
⇒2100/100+39 = 60
⇒ 21+39 = 60
⇒ 60 = 60
Therefore , L.H.S = R.H.S .
35% of that number added to 39 is the number itself = 35x/100 + 39 = x
⇒7x/20 + 39 = x
⇒x - 7x/20 = 39
⇒(20x-7x)/20 = 39
⇒13x/20 = 39
⇒ 13x = 39×20
⇒ 13x = 780
⇒ x = 780/13
⇒ x = 60.
Check : 35x/100+39=x
⇒35(60)/100+39 = 60
⇒2100/100+39 = 60
⇒ 21+39 = 60
⇒ 60 = 60
Therefore , L.H.S = R.H.S .
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