Question

the sum of two numbers is 35 three times the larger number is the same as four times the smaller number find the larger number

Answer 1

x+y=35
3x=4y
x=4/3y
=> 4/3y+y=35 => 7/3y=35 => y=35*3/7=15
3x=4*15
3x=60
x=20
20+15=35