Question

a number is 15 more than the other the sum of the two numbers is 195 find the numbers

Answer 1

Let assume one number =x
Then other number = x+15
Sum =195
X + x+15 =195
2x+15=195
2x =195-15
2x=180
X=180/2
X=90
One no. is 90
And other is 90+15 =105

Answer 2

X + ( X + 15 ) = 195
X + X + 15 = 195
2X = 195 - 15 
2X = 180 
X = 90. 
1ST NUMBER = 90
2ND NUMBER = 90 + 15 = 105.
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