Let the income of first person be 9x let the income of the second person be 7x difference b/w their weekly income=9x-7x=200 =2x=200 x=100 therefore income of first person is 9x=9×100=RS 900 therefore income of second person is 7x=7×100=RS 700
Let's solve for x: x/y=9/7 Multiply both sides by the reciprocal of 1/y to get rid if y as a denominator
(y/1)(x/y)= (9/7)(y/1) x= (9*y)/7 x= 9y/7
The difference in their incomes will be a subtraction problem
x-y=200 Substitute the answer for x in this equation to find how much person x makes. (9y/7)-y= 200 Multiply everything by 7 to eliminate the 7 denominator (7)(9y/7)-(7)(y)=(7)(200) 9y-7y=1400 2y= 1400 Divide both sides by 2 y= $700 person 2's weekly income
Substitute person 2's $ amount into the equation to find person 1's income x-y=200 x-700=200 Add 700 to both sides x= $900 person 1's weekly income
