Question

one number is 3 times another number.If 15 is added to both the numbers,then one of the new numbers became twice that of the new number.then one of the new number .Find the new number

Answer 1

let one number equal to x
let other number equal to 3 x
if 15 is added to both numbers
2(X + 15) equal to into 3 X + 15

2 X equal to 3x + 15 - 30
2x - 3x equal to minus 15
minus x equals to minus 15
X equal to 15
so one number is 15 and another is 3 multiplied 15
the other number is 45